Evolution. Species Changing over time

Size: px
Start display at page:

Download "Evolution. Species Changing over time"

Transcription

1 Evolution Species Changing over time

2 Charles Darwin Evolution by Means of Natural Selection

3 Reasons for Change Mutation A mutation could cause parents with genes for bright green coloration to have offspring with a gene for brown coloration. That would make the genes for brown beetles more frequent in the population. Migration Some individuals from a population of brown beetles might have joined a population of green beetles. That would make the genes for brown beetles more frequent in the green beetle population.

4 Reasons for Change Natural Selection Imagine that green beetles are easier for birds to spot (and hence, eat). Brown beetles are a little more likely to survive to produce offspring. They pass their genes for brown coloration on to their offspring. So in the next generation, brown beetles are more common than in the previous generation. Genetic Drift Imagine that in one generation, two brown beetles happened to have four offspring survive to reproduce. Several green beetles were killed when someone stepped on them and had no offspring. The next generation would have a few more brown beetles than the previous generation but just by chance. These chance changes from generation to generation are known as genetic drift.

5 Natural Selection Principles Principle of overproduction: Organisms are capable of producing huge numbers of offspring Principle of variation: offspring have hereditary physical variations in phenotype & genotypes Principle of competition: offspring must compete for limited resources Principle of differential reproduction: Organisms whose phenotypic characters allow them to best compete for limited resources will leave the most genes to succeeding populations.

6 Artificial Selection Long before Darwin, farmers and breeders used the idea of selection to cause major changes in the features of their plants and animals. Farmers and breeders allowed only the plants and animals with desirable characteristics to reproduce, causing the evolution of farm stock. This process is called artificial selection because people (instead of nature) select which organisms get to reproduce. As shown here, farmers have cultivated numerous popular crops from the wild mustard, by artificially selecting for certain attributes.

7 Genetic Variation Mutations are changes in the DNA. A single mutation can have a large effect, but in many cases, evolutionary change is based on the accumulation of many mutations. Gene flow is any movement of genes from one population to another and is an important source of genetic variation. Sexual reproduction can introduce new gene combinations into a population.

8 Survival of the fittest! Those individuals best suited to exploiting the various factors of the environment will, by definition, leave more genes to succeeding generations than those that are less suited for their environment!

9 Speciation Geographic isolation is a common way for the process of speciation to begin: rivers change course, mountains rise, continents drift, organisms migrate, and what was once a continuous population is divided into two or more smaller populations, but it doesn t even need to be a physical barrier like a river that separates two or more groups of organisms it might just be unfavorable habitat between the two populations that keeps them from mating with one another.

10 Types of evolution Convergent, divergent, co-evolution This is the product of coevolution: the plants would not have evolved hollow thorns or nectar pores unless their evolution had been affected by the ants, and the ants would not have evolved herbivore defense behaviors unless their evolution had been affected by the plants. Coevolution is likely to happen when different species have close ecological interactions with one another. These ecological relationships include: Predator/prey and parasite/host Competitive species Mutualistic species

11 Divergent evolution is the process of two or more related species becoming more and more dissimilar. In convergent evolution, on the other hand, unrelated species become more and more similar in appearance as they adapt to the same kind of environment.

12 Cladogram Phylogenic tree Tree of Life

13 Dating!!! 1. Radiometric dating relies on half-life decay of radioactive elements to allow scientists to date rocks and materials directly. 2. Stratigraphy provides a sequence of events from which relative dates can be extrapolated. 3. Molecular clocks allow scientists to use the amount of genetic divergence between organisms to extrapolate backwards to estimate dates.

14 Fossil record Have many good fossil records to show evolutionary relationships of organisms. Not complete for all species because of the process of becoming a fossil. Archaeopteryx Whales

15 Anatomy Homologous Structures: a structure that serves different functions in two species, but is derived from a common ancestral structure Analogous Structures : a structure that serves the same function in two species, but is NOT derived from a common ancestral structure vestigial structures have marginal, if any use to the organims

16 Embryology A B C D E F G H Which of these is the human???

17 Embryology

18 Biochemical evidence Cell Membranes are similar in all living organisms ALL DNA in prokaryotes & eukaryotes is made of A, G, T, C There are only 20 amino acids that make up all of the proteins needed to make EVERY living thing on the planet ATP is the fuel for ALL living cells!

19 It is important to remember that: Humans did not evolve from chimpanzees. Humans and chimpanzees are evolutionary cousins and share a recent common ancestor that was neither chimpanzee nor human. Humans are not higher or more evolved than other living lineages. Since our lineages split, humans and chimpanzees have each evolved traits unique to their own lineages. Human Evolution

Evolution. Species Changing over time

Evolution. Species Changing over time Evolution Species Changing over time Objectives I can differentiate between natural selection and artificial selection and I can give examples of each. I can explain several reasons for genetic variation

More information

EVOLUTION change in populations over time

EVOLUTION change in populations over time EVOLUTION change in populations over time HISTORY ideas that shaped the current theory James Hutton (1785) proposes that Earth is shaped by geological forces that took place over extremely long periods

More information

NOTES Ch 17: Genes and. Variation

NOTES Ch 17: Genes and. Variation NOTES Ch 17: Genes and Vocabulary Fitness Genetic Drift Punctuated Equilibrium Gene flow Adaptive radiation Divergent evolution Convergent evolution Gradualism Variation 17.1 Genes & Variation Darwin developed

More information

Chapter 16: Evolutionary Theory

Chapter 16: Evolutionary Theory Chapter 16: Evolutionary Theory Section 1: Developing a Theory Evolution: Artificial Selection: Evolution: I. A Theory to Explain Change Over Time B. Charles Darwin C. Theory: D. Modern evolutionary theory

More information

Reproduction- passing genetic information to the next generation

Reproduction- passing genetic information to the next generation 166 166 Essential Question: How has biological evolution led to the diversity of life? B-5 Natural Selection Traits that make an organism more or less likely to survive in an environment and reproduce

More information

NOTES CH 17 Evolution of. Populations

NOTES CH 17 Evolution of. Populations NOTES CH 17 Evolution of Vocabulary Fitness Genetic Drift Punctuated Equilibrium Gene flow Adaptive radiation Divergent evolution Convergent evolution Gradualism Populations 17.1 Genes & Variation Darwin

More information

Theory a well supported testable explanation of phenomenon occurring in the natural world.

Theory a well supported testable explanation of phenomenon occurring in the natural world. Evolution Theory of Evolution Theory a well supported testable explanation of phenomenon occurring in the natural world. Evolution the process by which modern organisms changed over time from ancient common

More information

Evolution Unit: What is Evolution?

Evolution Unit: What is Evolution? Evolution Unit: What is Evolution? What is The Theory of Evolution? Evolution is, a change (in the genetic composition) of a population over time. on a larger scale, the entire biological history, from

More information

EVOLUTION change in populations over time

EVOLUTION change in populations over time EVOLUTION change in populations over time HISTORY ideas that shaped the current theory James Hutton & Charles Lyell proposes that Earth is shaped by geological forces that took place over extremely long

More information

Guided Notes: Evolution. is the change in traits through generations over! Occurs in, NOT individual organisms

Guided Notes: Evolution. is the change in traits through generations over! Occurs in, NOT individual organisms Guided Notes: Evolution The Theory of Evolution is the change in traits through generations over! Occurs in, NOT individual organisms How Have Organisms Changed? At the time life emerged, the Earth was

More information

What is Evolution? Evolution Unit Vocabulary. Answer: Evidence of Evolution. What is a Gene Pool? Change over time.

What is Evolution? Evolution Unit Vocabulary. Answer: Evidence of Evolution. What is a Gene Pool? Change over time. What is Evolution? Evolution Unit Vocabulary Practice Quiz Change over time. Evidence of Evolution The gradual development of something, especially from simple to more complex. Can be big or very small

More information

EVOLUTION. HISTORY: Ideas that shaped the current evolutionary theory. Evolution change in populations over time.

EVOLUTION. HISTORY: Ideas that shaped the current evolutionary theory. Evolution change in populations over time. EVOLUTION HISTORY: Ideas that shaped the current evolutionary theory. Evolution change in populations over time. James Hutton & Charles Lyell proposes that Earth is shaped by geological forces that took

More information

Theory of Evolution. Chapter 15

Theory of Evolution. Chapter 15 Theory of Evolution Chapter 15 The History of Evolutionary Thought Evolution The development of new types of organisms from preexisting types of organisms over time. Also could be described as a heritable

More information

THE THEORY OF EVOLUTION

THE THEORY OF EVOLUTION THE THEORY OF EVOLUTION Why evolution matters Theory: A well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation

More information

What is Evolution? Study of how things change over time

What is Evolution? Study of how things change over time 10.2 15 Darwin s Theory Observations of Evolution What is Evolution? Study of how things change over time 10.2 15 Darwin s Theory Observations of Evolution Theories of Evolution - Lamarck Jean Baptiste

More information

Station 1. What is Evolution? What causes Evolution? A primary example of Evolution, is different bird beak sizes. What caused this to occur?

Station 1. What is Evolution? What causes Evolution? A primary example of Evolution, is different bird beak sizes. What caused this to occur? Station 1 What is Evolution? What causes Evolution? A primary example of Evolution, is different bird beak sizes. What caused this to occur? Station 2 What is Survival of the Fittest? How is fitness measured?

More information

History of Biological Diversity. Evolution: Darwin s travel

History of Biological Diversity. Evolution: Darwin s travel History of Biological Diversity Evolution: Darwin s travel Developing the Theory of Evolution The Galápagos Islands Darwin noticed that the different islands all seemed to have their own, slightly different

More information

CH_15_Evolution.notebook. February 28, Cellular Evolution. Jean Baptiste de Lamarck. Endosymbiont Theory. Charles Darwin

CH_15_Evolution.notebook. February 28, Cellular Evolution. Jean Baptiste de Lamarck. Endosymbiont Theory. Charles Darwin Cellular Evolution The first cells were prokaryotic They did not need oxygen (the atmosphere did not contain oxygen until 1.8 billion years ago) Eukaryotic cells were found in the fossil record about 2

More information

Unit 8: EVOLUTION NOTES

Unit 8: EVOLUTION NOTES Unit 8: EVOLUTION NOTES Canale LE EVOLUTION is the change in gene frequency in a population over time. Generally, organisms change from simple to more complex, and happens over many generations. **Evolution

More information

Evolution and Natural Selection

Evolution and Natural Selection Evolution and Natural Selection What Evolution is NOT Change in a gene pool over time What Evolution IS Evolution unites all fields of biology! Cell biology Genetics/DNA Ecology Biodiversity/Taxonomy Carolus

More information

Chapter 15 Theory of Evolution

Chapter 15 Theory of Evolution Chapter 15 Theory of Evolution 15-1 History of Evolutionary Thought Evolution- the development of new species form pre-existing species. -change over time. In the 1800 s scientists began to present evidence

More information

Chapter 4-Evolution + Biodiversity Part I

Chapter 4-Evolution + Biodiversity Part I Chapter 4-Evolution + Biodiversity Part I Origins of life Evolution > Chemical evolution > biological evolution Evidence for evolution > Fossils > DNA Evolution by Natural Selection > genetic variability

More information

Population Genetics & Evolution

Population Genetics & Evolution The Theory of Evolution Mechanisms of Evolution Notes Pt. 4 Population Genetics & Evolution IMPORTANT TO REMEMBER: Populations, not individuals, evolve. Population = a group of individuals of the same

More information

Darwin s Observations & Conclusions The Struggle for Existence

Darwin s Observations & Conclusions The Struggle for Existence Darwin s Observations & Conclusions The Struggle for Existence 1 Voyage of the Beagle During His Travels, Darwin Made Numerous Observations And Collected Evidence That Led Him To Propose A Revolutionary

More information

Evidence for Evolution

Evidence for Evolution Evidence for Evolution Evolution Biological evolution is descent with modification. It is important to remember that: Humans did not evolve from chimpanzees. Humans and chimpanzees are evolutionary cousins

More information

Evolutionary change. Evolution and Diversity. Two British naturalists, one revolutionary idea. Darwin observed organisms in many environments

Evolutionary change. Evolution and Diversity. Two British naturalists, one revolutionary idea. Darwin observed organisms in many environments Evolutionary change Evolution and Diversity Ch 13 How populations evolve Organisms change over time In baby steps Species (including humans) are descended from other species Two British naturalists, one

More information

Evolution Test Review

Evolution Test Review Name Evolution Test Review Period 1) A group of interbreeding organisms (a species) living in a given area is called population 2) Give an example of a species. Ex. One wolf Give an example of a population.

More information

VERY SIMPLY PUT-- Evolution is. change in a species over time.

VERY SIMPLY PUT-- Evolution is. change in a species over time. EVOLUTION VERY SIMPLY PUT-- Evolution is change in a species over time. How long did it take to CHANGE? 66 million years ago 54 million years ago 37 million years ago 26 million years ago Present Day There

More information

Ch. 16 Evolution of Populations

Ch. 16 Evolution of Populations Ch. 16 Evolution of Populations Gene pool the combined genetic information of all the members of a population. There are typically 2 or more alleles for a certain trait. (dominant or recessive) Allele

More information

Name: Period Study Guide 17-1 and 17-2

Name: Period Study Guide 17-1 and 17-2 Name: Period Study Guide 17-1 and 17-2 17-1 The Fossil Record (pgs. 417-422) 1. What is the fossil record? 2. What evidence does the fossil record provide? 1. 2. 3. List the 2 techniques paleontologists

More information

Biology Chapter 15 Evolution Notes

Biology Chapter 15 Evolution Notes Biology Chapter 15 Evolution Notes Section 1: Darwin's Theory of Evolution by Natural Selection Charles Darwin- English naturalist that studied animals over a number of years before developing the theory

More information

Evolution & Natural Selection

Evolution & Natural Selection Evolution & Natural Selection Chapter 8 Ideas about the earth & its inhabitants were slowly changing In the 1700 & 1800 s, scientists began to overturn long held beliefs and ideas Buffon suggested the

More information

e.g. population: 500, two alleles: Red (R) and White (r). Total: 1000 genes for flower color in the population

e.g. population: 500, two alleles: Red (R) and White (r). Total: 1000 genes for flower color in the population The Evolution of Populations What is Evolution? A change over time in the genetic composition of a population Human evolution The gene pool Is the total aggregate of genes for a particular trait in a population

More information

Warm Up. Explain how a mutation can be detrimental in one environmental context and beneficial in another.

Warm Up. Explain how a mutation can be detrimental in one environmental context and beneficial in another. Warm Up Explain how a mutation can be detrimental in one environmental context and beneficial in another. Last Picture 4B Evidence for Evolution 1A.4a: Scientific evidence of biological evolution uses

More information

Name Date Class. Patterns of Evolution

Name Date Class. Patterns of Evolution Concept Mapping Patterns of Evolution Complete the flowchart about patterns of evolution. These terms may be used more than once: adaptive radiation, change in response to each other, convergent evolution,

More information

#Evolution. Nothing in Biology makes sense except in the light of evolution.

#Evolution. Nothing in Biology makes sense except in the light of evolution. #Evolution Nothing in Biology makes sense except in the light of evolution. The Theory of Evolution Change over time. People used to think that species did not change. DARWIN WAS NOT THE PERSON TO COME

More information

Vocabulary List: Instructions: blackout

Vocabulary List: Instructions: blackout Artificial Selection Competition Fitness Adaptation Natural Selection Descent with Modification Common Ancestor Fossil Record Geographic Distribution Homologous Body Structures Vestigial Organs Similarities

More information

REVIEW 6: EVOLUTION. 1. Define evolution: Was not the first to think of evolution, but he did figure out how it works (mostly).

REVIEW 6: EVOLUTION. 1. Define evolution: Was not the first to think of evolution, but he did figure out how it works (mostly). Name: REVIEW 6: EVOLUTION 1. Define evolution: 2. Modern Theory of Evolution: a. Charles Darwin: Was not the first to think of evolution, but he did figure out how it works (mostly). However, Darwin didn

More information

Enduring Understanding: Change in the genetic makeup of a population over time is evolution Pearson Education, Inc.

Enduring Understanding: Change in the genetic makeup of a population over time is evolution Pearson Education, Inc. Enduring Understanding: Change in the genetic makeup of a population over time is evolution. Objective: You will be able to identify the key concepts of evolution theory Do Now: Read the enduring understanding

More information

Chapter 8: Evolution and Natural Selection

Chapter 8: Evolution and Natural Selection Darwin s dangerous idea: evolution by natural selection Lectures by Mark Manteuffel, St. Louis Community College Chapter 8: Evolution and Natural Selection Use new chapter opening photo here Do Now: Scientific

More information

Evolution. Changes over Time

Evolution. Changes over Time Evolution Changes over Time TEKS Students will analyze and evaluate B. 7 C how natural selection produces change in populations, not individuals B. 7 E/F effects of genetic mechanisms and their relationship

More information

Wake Acceleration Academy - Biology Note Guide Unit 6: Evolution & The Diversity of Life

Wake Acceleration Academy - Biology Note Guide Unit 6: Evolution & The Diversity of Life Wake Acceleration Academy - Biology Note Guide Unit 6: Evolution & The Diversity of Life Extra Resources Website: http://waa-science.weebly.com Module 1: Darwin and Natural Selection Vocabulary Term Charles

More information

Evidence for Evolution

Evidence for Evolution Evidence for Evolution 1. 2. 3. 4. 5. Paleontology Comparative Anatomy Embryology Comparative Biochemistry Geographical Distribution How old is everything? The History of Earth as a Clock Station 1: Paleontology

More information

Final Revision G8 Biology ( ) Multiple Choice Identify the choice that best completes the statement or answers the question.

Final Revision G8 Biology ( ) Multiple Choice Identify the choice that best completes the statement or answers the question. Final Revision G8 Biology ( 2017-2018 ) Multiple Choice Identify the choice that best completes the statement or answers the question. 1 A species is a group of similar organisms that A can mate with each

More information

Biology. Slide 1 of 41. End Show. Copyright Pearson Prentice Hall

Biology. Slide 1 of 41. End Show. Copyright Pearson Prentice Hall Biology 1 of 41 Do Now: Why do the colors of moths change over time? Write a detailed explanation on the scrap paper provided. 2 of 41 Why do the colors of moths change over time? 3 of 41 4 of 41 Evolution

More information

Changes Over Time EVOLUTION

Changes Over Time EVOLUTION Changes Over Time EVOLUTION Charles Darwin The Father of Evolution History Darwin s World (1809-1875) Height of the British colonial period. Beginning of the Industrial Revolution. New Ideas: Taxonomy

More information

Thursday, January 14. Teaching Point: SWBAT. assess their knowledge to prepare for the Evolution Summative Assessment. (TOMORROW) Agenda:

Thursday, January 14. Teaching Point: SWBAT. assess their knowledge to prepare for the Evolution Summative Assessment. (TOMORROW) Agenda: Thursday, January 14 Teaching Point: SWBAT. assess their knowledge to prepare for the Evolution Summative Assessment. (TOMORROW) Agenda: 1. Show Hinsz your completed Review WS 2. Discuss answers to Review

More information

Evidence of evolution

Evidence of evolution The Theory of Evolution Charles Darwin Evidence for evolution Mechanisms for evolution Natural selection Speciation Evidence of evolution Structural adaptations Mimicry Camouflage Physiological adaptations

More information

Chapter 2 Section 1 discussed the effect of the environment on the phenotype of individuals light, population ratio, type of soil, temperature )

Chapter 2 Section 1 discussed the effect of the environment on the phenotype of individuals light, population ratio, type of soil, temperature ) Chapter 2 Section 1 discussed the effect of the environment on the phenotype of individuals light, population ratio, type of soil, temperature ) Chapter 2 Section 2: how traits are passed from the parents

More information

Outline. Evolution: Speciation and More Evidence. Key Concepts: Evolution is a FACT. 1. Key concepts 2. Speciation 3. More evidence 4.

Outline. Evolution: Speciation and More Evidence. Key Concepts: Evolution is a FACT. 1. Key concepts 2. Speciation 3. More evidence 4. Evolution: Speciation and More Evidence Evolution is a FACT 1. Key concepts 2. Speciation 3. More evidence 4. Conclusions Outline Key Concepts: A species consist of one or more populations of individuals

More information

EVOLUTION. Evolution - changes in allele frequency in populations over generations.

EVOLUTION. Evolution - changes in allele frequency in populations over generations. EVOLUTION Evolution - changes in allele frequency in populations over generations. Sources of genetic variation: genetic recombination by sexual reproduction (produces new combinations of genes) mutation

More information

Evolution. Darwin s Voyage

Evolution. Darwin s Voyage Evolution Darwin s Voyage Charles Darwin Explorer on an observation trip to the Galapagos Islands. He set sail on the HMS Beagle in 1858 from England on a 5 year trip. He was a naturalist (a person who

More information

EVOLUTION. It s a Family Affair

EVOLUTION. It s a Family Affair EVOLUTION It s a Family Affair TODAY S LESSON Diversity and Evolution of Living Organisms I. The scientific theory of evolution is the organizing principle of life science. II. The scientific theory of

More information

Change Over Time Concept Map

Change Over Time Concept Map Change Over Time Concept Map Darwin reasoned that plants or animals that arrived on the Galapagos Islands faced conditions that were different from those on the mainland. Perhaps, Darwin hypothesized,

More information

Any evidence of an organism that lived long ago. Sedimentary. Relative Dating. Absolute Dating

Any evidence of an organism that lived long ago. Sedimentary. Relative Dating. Absolute Dating A fossil is: Any evidence of an organism that lived long ago Sedimentary Rock Almost all fossils are found in How do scientists determine the age of fossils? Relative Dating Absolute Dating The deeper

More information

Theory of Evolution. Evolution The process of change over time. Specifically, a change in the frequency of a gene or allele in a population over time

Theory of Evolution. Evolution The process of change over time. Specifically, a change in the frequency of a gene or allele in a population over time Theory of Evolution Learning Goals Define "Evolution" & "Natural Selection". Describe the 4 steps of Natural Selection, giving an example of each. Explain the importance of "Variation". Does Natural Selection

More information

7.1 What is the Theory of Evolution?

7.1 What is the Theory of Evolution? Evolution 7.1 What is the Theory of Evolution? SCIENTIFIC THEORY: a well-tested scientific explanation that no evidence contradicts Theories explain the basic ideas of science. If scientists find new evidence

More information

Vocab Darwin & Evolution (Chap 15)

Vocab Darwin & Evolution (Chap 15) Vocab Darwin & Evolution (Chap 15) 1. Evolution 2. Theory 3. Charles Darwin 4. Fossil 5. Species 6. Natural variation 7. Artificial selection 8. Struggle for existence 9. Fitness 10.Adaptation 11.Survival

More information

Darwin s Theory of Evolution

Darwin s Theory of Evolution EVOLUTION Darwin s Theory of Evolution n Evolution, or change over time, is the process by which modern organisms have descended from ancient organisms. n A scientific theory is a well-supported testable

More information

Evolution & Natural Selection. Part 2

Evolution & Natural Selection. Part 2 Evolution & Natural Selection Part 2 Remember what we re talking about? Mechanisms of evolution: Mutation Genetic drift Migration Natural selection Artificial selection Sexual selection Artificial selection

More information

LIFE SCIENCE CHAPTER 7 FLASHCARDS

LIFE SCIENCE CHAPTER 7 FLASHCARDS LIFE SCIENCE CHAPTER 7 FLASHCARDS What did Darwin NOT understand about the process of evolution? A. the slowness of the process B. the role of genetics C. the importance of separation D. the importance

More information

Biology 2017 Mr. Johnson

Biology 2017 Mr. Johnson Class Notes For EVOLUTION Biology 2017 Mr. Johnson Evolution genetic change over time *Theory = explanation based on much evidence (do not confuse with hypothesis ) *Not goal-oriented (can change and

More information

CH 16: Evolution of Population

CH 16: Evolution of Population CH 16: Evolution of Population 16.1 Genes and Variation A. Introduction 1. Darwin s theory of evolution by natural selection explained how 2. What Darwin did not know was how were passed down through each

More information

What is Evolution? Evolution = Most changes occur gradually, but can happen on a shorter time scale Variations in populations come from

What is Evolution? Evolution = Most changes occur gradually, but can happen on a shorter time scale Variations in populations come from Evolution Notes What is Evolution? Evolution = Most changes occur gradually, but can happen on a shorter time scale Variations in populations come from Time Line of Scientists 1785 proposes that the Earth

More information

Microevolution is a change in the gene frequencies of a population. Can happen quickly. Ex: antibiotic resistant bacterial colonies

Microevolution is a change in the gene frequencies of a population. Can happen quickly. Ex: antibiotic resistant bacterial colonies Evolution Unit 1 Microevolution is a change in the gene frequencies of a population. Can happen quickly Ex: antibiotic resistant bacterial colonies New species evolve and no longer interbreed with the

More information

15-3 Darwin Presents His Case Slide 2 of 41

15-3 Darwin Presents His Case Slide 2 of 41 15-3 Darwin Presents His Case 2 of 41 Publication of On the Origin of Species Publication of On the Origin of Species Darwin filled notebooks with his ideas about species diversity and the evolution process.

More information

#Evolution. Nothing in Biology makes sense except in the light of evolution.

#Evolution. Nothing in Biology makes sense except in the light of evolution. Wednesday 1/24/18 Pick up your assignment in the tray. Turn in your BEAD lab from Monday! Due first minute of class or it s late. Turn in homework if you didn t finish your work in class yesterday! Due

More information

Biology II. Evolution

Biology II. Evolution Biology II Evolution Observation-Something we know to be true based on one or more of our five senses. Inference- A conclusion which is based on observations Hypothesis- a testable inference usually stated

More information

Biology Slide 1 of 41

Biology Slide 1 of 41 Biology 1 of 41 15-3 Darwin Presents His Case 2 of 41 15-3 Darwin Presents His Case Publication of On the Origin of Species Publication of On the Origin of Species Darwin filled notebooks with his ideas

More information

WTHS Biology Keystone Exams

WTHS Biology Keystone Exams WTHS Biology Keystone Exams Biology Keystone Review Packet 10 th / 11 th Grade Keystone Test Prep This packet contains helpful information for you to prepare for the upcoming Biology Keystone Test on May

More information

Biology. Slide 1 of 41. End Show. Copyright Pearson Prentice Hall

Biology. Slide 1 of 41. End Show. Copyright Pearson Prentice Hall Biology 1 of 41 15-3 Darwin Presents His Case 2 of 41 Publication of On the Origin of Species Publication of On the Origin of Species Darwin filled notebooks with his ideas about species diversity and

More information

Publication of On the Origin of Species Darwin Presents His Case

Publication of On the Origin of Species Darwin Presents His Case Publication of On the Origin of Species Publication of On the Origin of Species Darwin filled notebooks with his ideas about species diversity and the evolution process. Darwin was stunned and disturbed

More information

List the five conditions that can disturb genetic equilibrium in a population.(10)

List the five conditions that can disturb genetic equilibrium in a population.(10) List the five conditions that can disturb genetic equilibrium in a population.(10) The five conditions are non-random mating, small population size, immigration or emigration, mutations, and natural selection.

More information

Welcome to Evolution 101 Reading Guide

Welcome to Evolution 101 Reading Guide Name: Welcome to Evolution 101 Reading Guide http://evolution.berkeley.edu/evolibrary/article/evo_01 Read the information on the website. Click on the next arrow at the bottom of each page to move to the

More information

Introduction to Evolution

Introduction to Evolution Introduction to Evolution What is evolution? A basic definition of evolution evolution can be precisely defined as any change in the frequency of alleles within a gene pool from one generation to the

More information

Chapter 15 Evolution

Chapter 15 Evolution Section 1: Darwin s Theory of Natural Selection Section 2: Evidence of Section 3: Shaping ary Theory Click on a lesson name to select. 15.1 Darwin s Theory of Natural Selection Darwin on the HMS Beagle

More information

Gene Pool The combined genetic material for all the members of a population. (all the genes in a population)

Gene Pool The combined genetic material for all the members of a population. (all the genes in a population) POPULATION GENETICS NOTES Gene Pool The combined genetic material for all the members of a population. (all the genes in a population) Allele Frequency The number of times a specific allele occurs in a

More information

Name Date Class CHAPTER 15. In your textbook, read about developing the theory of natural selection. For each statement below, write true or false.

Name Date Class CHAPTER 15. In your textbook, read about developing the theory of natural selection. For each statement below, write true or false. Name Date Class Study Guide CHAPTER 15 Section 1: Darwin s Theory of Evolution by Natural Selection In your textbook, read about developing the theory of natural selection. For each statement below, write

More information

IV. Comparative Anatomy

IV. Comparative Anatomy Whale Evolution: Fossil Record of Evolution Modern toothed whales Rodhocetus kasrani reduced hind limbs could not walk; swam with up-down motion like modern whales Pakicetus attocki lived on land; skull

More information

Chapter 15 Open Note Quiz Concepts 2 nd Period

Chapter 15 Open Note Quiz Concepts 2 nd Period Chapter 15 Open Note Quiz Concepts 2 nd Period 1.) Please describe the difference between a homologous structure and an analogous structure. Homologous Structure = Same bone structure, different function

More information

#Evolution. Nothing in Biology makes sense except in the light of evolution.

#Evolution. Nothing in Biology makes sense except in the light of evolution. #Evolution Nothing in Biology makes sense except in the light of evolution. The Theory of Evolution Change over time. People used to think that species did not change. DARWIN WAS NOT THE PERSON TO COME

More information

Evolution (Chapters 15 & 16)

Evolution (Chapters 15 & 16) Evolution (Chapters 15 & 16) Before You Read... Use the What I Know column to list the things you know about evolution. Then list the questions you have about evolution in the What I Want to Find Out column.

More information

Evidences of Evolution

Evidences of Evolution Evidences of Evolution Darwin stated that all organisms descend from a common ancestor Darwin based his theory of Natural Selection on observations of: Traits, geographical distribution, selective breeding,

More information

Vocab. ! Evolution - change in a kind of organism over time; process by which modern organisms have descended from ancient organisms

Vocab. ! Evolution - change in a kind of organism over time; process by which modern organisms have descended from ancient organisms Vocab! Evolution - change in a kind of organism over time; process by which modern organisms have descended from ancient organisms! Theory - well-tested explanation that unifies a broad range of observations

More information

Gene Pool Genetic Drift Geographic Isolation Fitness Hardy-Weinberg Equilibrium Natural Selection

Gene Pool Genetic Drift Geographic Isolation Fitness Hardy-Weinberg Equilibrium Natural Selection CONCEPT 1 EVOLUTION 1. Natural Selection a. Major mechanism of change over time Darwin s theory of evolution b. There is variation among phenotypes genetic mutations play a role in increasing variation

More information

AP Biology Review Packet 5- Natural Selection and Evolution & Speciation and Phylogeny

AP Biology Review Packet 5- Natural Selection and Evolution & Speciation and Phylogeny AP Biology Review Packet 5- Natural Selection and Evolution & Speciation and Phylogeny 1A1- Natural selection is a major mechanism of evolution. 1A2: Natural selection acts on phenotypic variations in

More information

Darwin & Natural Selection. Adapted from Mr. Gray & Bristol University

Darwin & Natural Selection. Adapted from Mr. Gray & Bristol University Darwin & Natural Selection Adapted from Mr. Gray & Bristol University Basic Scientific Terms Review Hypothesis: is an educated guess, based on observations. It's a prediction of cause and effect. Theory:

More information

Big Idea #1: The process of evolution drives the diversity and unity of life

Big Idea #1: The process of evolution drives the diversity and unity of life BIG IDEA! Big Idea #1: The process of evolution drives the diversity and unity of life Key Terms for this section: emigration phenotype adaptation evolution phylogenetic tree adaptive radiation fertility

More information

1. T/F: Genetic variation leads to evolution. 2. What is genetic equilibrium? 3. What is speciation? How does it occur?

1. T/F: Genetic variation leads to evolution. 2. What is genetic equilibrium? 3. What is speciation? How does it occur? 1. T/F: Genetic variation leads to evolution. 2. What is genetic equilibrium? 3. What is speciation? How does it occur? Warm UP Notes on Environmental Factor Concept Map Brief 6 questions and Concept Map

More information

chatper 17 Multiple Choice Identify the choice that best completes the statement or answers the question.

chatper 17 Multiple Choice Identify the choice that best completes the statement or answers the question. chatper 17 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. If a mutation introduces a new skin color in a lizard population, which factor might determine

More information

Chapter 16 and 17: Evolution Darwin s Voyage of Discovery

Chapter 16 and 17: Evolution Darwin s Voyage of Discovery Chapter 16 and 17: Evolution Darwin s Voyage of Discovery Father of Evolution:. Born in England (2/12/1809) In 1831, Darwin became a naturalist on the HMS Studied and life on a mapping expedition to South

More information

Taxonomy. The Science of Classification

Taxonomy. The Science of Classification Taxonomy The Science of Classification How are organisms classified? 1. Scientists begin with similarities in structure and function. -Type of Cell -Unicellular or Multicellular -Mode of Reproduction -Mode

More information

Adaptation. Evolution. What is evolution? What are the tools used by scientists to understand evolutionary time?

Adaptation. Evolution. What is evolution? What are the tools used by scientists to understand evolutionary time? Adaptation Evolution: The golden Thread Adaptation - Process where species acquire* traits that allow them to survive in their environments. Limited range of physiological modifications. Inheritance of

More information

EVOLUTION: EVIDENCE AND THEORY

EVOLUTION: EVIDENCE AND THEORY Name Class Date CHAPTER 15 TEST EVOLUTION: EVIDENCE AND THEORY MATCHING Write the correct letter in the blank before each numbered term. 1. natural selection 2. fitness 3. acquired trait 4. biogeography

More information

Biology 11 UNIT 1: EVOLUTION LESSON 2: HOW EVOLUTION?? (MICRO-EVOLUTION AND POPULATIONS)

Biology 11 UNIT 1: EVOLUTION LESSON 2: HOW EVOLUTION?? (MICRO-EVOLUTION AND POPULATIONS) Biology 11 UNIT 1: EVOLUTION LESSON 2: HOW EVOLUTION?? (MICRO-EVOLUTION AND POPULATIONS) Objectives: By the end of the lesson you should be able to: Describe the 2 types of evolution Describe the 5 ways

More information

THE HISTORY OF THE THEORY. Darwin presented that happens and offered an of how it happens. Theory a broad that has been and

THE HISTORY OF THE THEORY. Darwin presented that happens and offered an of how it happens. Theory a broad that has been and Evolution Notes THE HISTORY OF THE THEORY Why is the evolutionary theory associated with Charles Darwin? Darwin presented that happens and offered an of how it happens. o Evolution the process by which

More information

EVOLUTION & SPECIATION

EVOLUTION & SPECIATION EVOLUTION & SPECIATION Page 2 VOCABULARY REVIEW NEW VOCABULARY EVOLUTION CHANGE OVER TIME NATURAL SELECTION - INDIVIDUALS BETTER ADAPTED TO THE ENVIRONMENT ARE ABLE TO SURVIVE & REPRODUCE. A.K.A. SURVIVAL

More information

of EVOLUTION???????????? states that existing forms of life on earth have arisen from earlier forms over long periods of time.

of EVOLUTION???????????? states that existing forms of life on earth have arisen from earlier forms over long periods of time. Evolution The WHAT theory IS of EVOLUTION???????????? states that existing forms of life on earth have arisen from earlier forms over long periods of time. Some of the strongest evidence to support evolution

More information

Quazi accurate photo history

Quazi accurate photo history Quazi accurate photo history Evolution- change over time Fossils preserved remains Geologic Time earth s history The evidence shows changes in environment changes in species The Theory of Evolution supported

More information

Please Do Not Write On The Charles Darwin and Evolution Study Guide Practice test Practice Test Multiple Choice

Please Do Not Write On The Charles Darwin and Evolution Study Guide Practice test Practice Test Multiple Choice Please Do Not Write On The Charles Darwin and Evolution Study Guide Practice test Practice Test Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.

More information