Natural Selection. Charles Darwin & Alfred Russell Wallace
|
|
- Alexander Caldwell
- 5 years ago
- Views:
Transcription
1 Natural Selection Charles Darwin & Alfred Russell Wallace
2 Darwin s Influences Darwin observed such variations in species on his voyage as a naturalist on the HMS Beagle
3 Darwin s Influences Kept vast diaries of the many organisms seen and their tremendous variations Ex. Galapagos Islands finches, tortoises Ex. Snakes with legs Ex. Penguins use wings to swim Ex. Fossils of extinct animals as well as those that closely resemble modern animals
4
5 Darwin s Influences J. B. de Lamarck - Claimed that all organisms had a desire to change - The more an organism used a structure, the larger it became - These acquired traits could be inherited by their offspring
6 Darwin s Influences Charles Lyell Principles of Geology Geological processes on Earth resulted from continuous cycling over a long period of time. This allowed Darwin to consider that the Earth was much older than originally believed and thus organisms could change over a very long period of time
7 Darwin s Influences Artificial Selection The process in which breeders choose the variations to be used to produce the following generations Darwin noted that breeders and farmers create better (stronger/faster) livestock and crops through selective breeding Would make sense that this could occur in nature too.
8 Artificial Selection All these veggies from wild mustard plants?!
9 Darwin s Influences Thomas Malthus theory Natural populations do not grow out of control in nature, even though some reproduce by the 1000 s Populations are kept in check by predators, diseases, limitations in food, water, and other resources that are essential for survival, hence.there is a struggle for existence (Darwin)
10 Change is slow but it does happen! The following circumstances are needed for natural selection to occur..
11 Population Size Natural populations do not grow out of control in nature, even though some reproduce by the 1000 s Populations are kept in check by predators, diseases, limitations in food, water, and other resources that are essential for survival, hence.there is a struggle for existence (Darwin)
12
13 Variation Variation in genotype and phenotype exists in populations (from sexual reproduction) Some variations are more suitable for environmental conditions
14 Variation in Cuban tree snails
15 VARIATION in flowers In lady bugs
16 Fitness of Individuals Some individuals have genetic variations that create more favourable traits in a particular environment or habitat. These favourable traits may allow an individual to live longer and produce more offspring. This individual is more fit
17 Natural Selection The organisms best suited for the environment will survive The best suited individual will live longer and leave more offspring These offspring will inherit the advantageous genotypes and phenotypes of their parents and will also be fit for their environment.
18 At the same time. Organisms with less favourable traits are less likely to survive and reproduce Thus, they are less likely to pass on these unfavourable genes to the next generation Over time, these genes may be wiped out of a population.
19 Struggle for Survival The fact that there is a constant struggle for survival among individuals in an overcrowded. population means that some of the individuals will die before reproducing. The most fit individuals in a population are the ones that are least likely to die of starvation etc.
20
21 NOTE: Natural selection will usually only cause changes in a population if the environment the population is in is changing. If the environment stays the same, it will always be the same traits that are favourable (fit).
22 A summary of natural selection 1. No two members of a species are identical (there is variation) 2. Variation is inheritable (alleles of genes are passed from parents to offspring) 3. More organisms are born than reach adulthood 4. Organisms compete for resources (struggle to survive) 5. Survival of the fittest
23 New Species Over time, this process can result in adaptations that specialize populations for particular ecological niches and may eventually result in the emergence of new species.
24 Pepper Moths & Natural Selection In the beginning Trees covered in offwhite lichens moths rest on trees Industrial Revolution Soot starts to cover trees, darkening them Light coloured moths have a survival advantage (camouflaged) Dark coloured moths have a survival advantage (camouflaged)
25
26 Discuss with your partner how you think the peppered moth example demonstrates all the conditions needed for natural selection to occurs
27 Summary Both colour variations exist in the moth population BEFORE the industrial revol. Environmental changes select one colour over the other as a survival advantage More of one colour moth survives longer, reproduces more thus, the population of each colour increases or decreases
28
Darwin s Theory of Natural Selection
Darwin s Theory of Natural Selection Question: Has Life Ever Changed? In 1700 s, scientists examined fossils that showed how extinct species look very different than they do today. Scientists began to
More informationDarwin s Theory of Evolution. The Puzzle of Life s Diversity
Darwin s Theory of Evolution The Puzzle of Life s Diversity Evolutionary Theory A scientific explanation that can illustrate the diversity of life on Earth Theory A well-supported, testable explanation
More informationEVOLUTION. 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 informationNatural Selection and Evolution
Natural Selection and Evolution Our plant has been evolving from its simplest beginnings into a vast range of organisms present today This has happened by natural selection Natural Selection and Evolution
More informationSelection 10: Theory of Natural Selection
Selection 10: Theory of Natural Selection Darwin began his voyage thinking that species could not change His experience during the five-year journey altered his thinking Variation of similar species among
More informationEVOLUTION 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 informationEvolution Notes Darwin and His Ideas
Evolution Notes Darwin and His Ideas Charles Darwin Charles Darwin was born in 1809 (on the same day as Abraham Lincoln) In Darwin s day, scientists were just starting to come around to the idea the Earth
More informationEVOLUTION 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 informationEVOLUTION. Charles Darwin
EVOLUTION Charles Darwin Question for Thought Earth has millions of other kinds of organisms of every imaginable shape, size, and habitat. This variety of living things is called biological diversity.
More informationVocab. ! 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 informationTHE THEORY OF EVOLUTION. Darwin, the people who contributed to his ideas, and what it all really means.
THE THEORY OF EVOLUTION Darwin, the people who contributed to his ideas, and what it all really means. DARWIN S JOURNEY Charles Darwin was born in England on February 12, 1809. Geologists were suggesting
More informationI. Theories of Evolution Evolution: Adaptation: Jean Baptiste de Lamarck: a) Use & Disuse: b) Inheritance of Acquired Characteristics:
I. Theories of Evolution Evolution: Adaptation: Jean Baptiste de Lamarck: a) Use & Disuse: b) Inheritance of Acquired Characteristics: Figure 1: Lamarckian Evolution III. Darwin & Evolution The Voyage
More informationDarwin spent 20 years conducting research, after his voyage, in attempt to understand HOW evolution occurs.
Darwin spent 20 years conducting research, after his voyage, in attempt to understand HOW evolution occurs. One of his biggest influences was the work of farmers and breeders. He noticed that domesticated
More informationTheory 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 informationChapter 16. Darwin s Theory Of Evolution
Chapter 16 Darwin s Theory Of Evolution 16-1 I. Evolution A. process by which modern organisms have descended from ancient organisms (change over time) II. Charles Darwin A. Sailed around the world on
More informationCharles Darwin became a naturalist, a scientist who studies nature, during a voyage on the British ship HMS Beagle.
Theory of Evolution Darwin s Voyage What did Darwin observe? Charles Darwin became a naturalist, a scientist who studies nature, during a voyage on the British ship HMS Beagle. On his journey, Darwin observed
More informationBiology 3201 Unit 4 Evolution Ch Introducing Evolution (part 1) What is Evolution?
Biology 3201 Unit 4 Evolution Ch. 19 - Introducing Evolution (part 1) What is Evolution? Evolution: the relative change in the characteristics of a population over successive generations A population is
More informationWho developed the theory of acquired characteristics? a. Darwin b. Lamarck c. Charles Lyell d. Aristotle
Who developed the theory of acquired characteristics? a. Darwin b. Lamarck c. Charles Lyell d. Aristotle 1 Who developed the theory of natural selection, and survival of the fittest? a. Darwin b. Lamarck
More informationEQ: How are genetic variations caused and how do they lead to natural selection?
EQ: How are genetic variations caused and how do they lead to natural selection? What is natural selection Individuals that have physical or behavioral traits that better suit their environment are more
More informationOutline. Evolution: Evidence, Selection and Adaptation. Key Concepts: One of the key words of our modern time is Evolution
Evolution: Evidence, Selection and Adaptation One of the key words of our modern time is Evolution u 1. Key concepts Outline u 2. Early Beliefs, and New Discoveries u 3. Darwin developed the theory of
More informationChapter 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 informationUnit 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 informationA change in an inherited characteristic of a population over time. Individuals DO NOT evolve!
Evolution Unit 1 A change in an inherited characteristic of a population over time. Individuals DO NOT evolve! Evolution Unit evolution the process of biological change by which descendants come to differ
More informationSummary - Mon and Wed
Unit 1: Evolution 1 Summary - Mon and Wed 1. Wrap up red tape 2. Short answers - the tautology 3. Recap scientific method/inference to the best explanation 4. The natural sciences before Darwin 5. Influences
More informationDarwin 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 informationDarwin s Theory of Evolution
Darwin s Theory of Evolution The Puzzle of Life s Diversity Evolution = the process by which modern organisms have descended from ancient organisms. Theory = a well-supported testable explanation of phenomena
More informationAre individuals in a population of a species the same?
LEARNING OUTCOMES Define the term variation. Discuss the fact that variation occurs within, as well as between, species. Describe the differences between continuous and discontinuous variation, using examples
More informationADAPTATIONS. Characteristics that give an organism a better chance of survival.
ADAPTATIONS Characteristics that give an organism a better chance of survival. Special traits that help living organisms survive in a particular environment. Ex: Polar bear s thick white fur keeps him
More informationBoardworks Ltd Evolution
1 of 34 Boardworks Ltd 2011 Evolution 2 of 34 Boardworks Ltd 2011 Life on earth 3 of 34 Boardworks Ltd 2011 Life on earth began approximately 3,500 million years ago. What do you think the earliest life
More informationBiology 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 informationBiology. 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 informationPublication 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 information1. E, or change over time, is the process by which modern organisms have descended from ancient organisms
Name Date Period EVOLUTION STARTS WITH? 1. E, or change over time, is the process by which modern organisms have descended from ancient organisms 2. A scientific T is a well supported, testable explanation
More informationTHE 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 informationPrinciples of Evolution. Ch Early Ideas About Evolution Early Ideas About Evolution Early Ideas About Evolution 3/21/2016
Principles of Evolution Ch. 10 "Nothing in biology makes sense except in the light of evolution." 10.1 Early Ideas About Evolution The Puzzle of Life s Diversity o Evolution - modern organisms have descended
More informationWhat 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 information15 Darwin's Theory of Natural Selection. Publication of The Origin of Species
Publication of The Origin of Species -He continued observing the specimens he collected and thinking about natural selection, but kept it to himself for the next 20 YEARS! -In 1858, he received a manuscript
More informationEvolution. Chapters 16 & 17
Evolution Chapters 16 & 17 Darwin s Voyage Chapter 16 Change over time Evolution Charles Darwin Developed a scientific theory that explains how modern organisms evolved over long periods of time through
More informationTHE 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 informationNatural Selection. Professor Andrea Garrison Biology 3A Illustrations 2011 Pearson Education, Inc., unless otherwise noted
Natural Selection Professor Andrea Garrison Biology 3A Illustrations 2011 Pearson Education, Inc., unless otherwise noted Natural Selection Mechanism for change in species over time Proposed by Charles
More informationPlease 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 informationHistory of Evolutionary Thought
History of Evolutionary Thought What was the view of the world and nature before Darwin? 1. Static Universe The universe didn t change through time Problem - Fossil Evidence What was the view of the world
More informationChapter 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 information8/6/2014. Biodiversity. Evolution: Natural Selection Lecture 16 Summer Species Diversity & Unity. Darwin s Journey.
Biodiversity 1 Evolution: Natural Selection Lecture 16 Summer 2014 Globally - ~1.8 million species ~10,000 birds ~ 4629 mammals ~ 8240 reptiles ~ 900,000 insects (named) ~ 300,000 vascular plants ~ 20,000
More informationEvolution: Natural Selection Lecture 16 Summer 2014
Evolution: Natural Selection Lecture 16 Summer 2014 Biodiversity 1 Globally - ~1.8 million species ~10,000 birds ~ 4629 mammals ~ 8240 reptiles ~ 900,000 insects (named) ~ 300,000 vascular plants ~ 20,000
More informationCharles Darwin and Evolution
Charles Darwin and Evolution from so simple a beginning, endless forms most beautiful and most wonderful have been, and are being, evolved. On the Origin of Species I. Darwin s Travels 1. In 1831, Charles
More informationUnderstanding Natural Selection
Understanding Natural Selection Charles Darwin (1809-1882) Sailed around the world 1831-1836 What did Darwin s Travels reveal The diversity of living species was far greater than anyone had previously
More informationWhat is Natural Selection? Natural & Artificial Selection. Answer: Answer: What are Directional, Stabilizing, Disruptive Natural Selection?
What is Natural Selection? Natural & Artificial Selection Practice Quiz What are Directional, Stabilizing, Disruptive Natural Selection? When an environment selects for a trait in organisms. Who came up
More informationnatural selection evolution
Honors Biology Bellringer: signintoaclicker! natural selection evolution Standard: Students will evaluate the role of natural selection in the development of the theory of evolution. Element: a. Trace
More informationVERY 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 informationCharles Darwin. 0 Lived in England : Beagle s five-year voyage mapping the coastline of South America
Charles Darwin 0 Lived in England 0 1809-1882 0 1831-1836: Beagle s five-year voyage mapping the coastline of South America 0 1859: On the Origin of Species by Means of Natural Selection 0 EVOLUTION à
More informationChapter 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 informationDarwin and Natural Selection
Darwin and Natural Selection Background: Students know Evolution is change over time Essential Question: What was Darwin s conclusion about his observations? (CIRCLE ans. ) Vocabulary: Highlight or underline
More informationEvidence for EVOLUTION
Evidence for EVOLUTION Fossils A fossil is the naturally preserved remains or traces of animals or plants that lived in the geologic past. There are two main types of fossils; body and trace. Body fossils
More informationEvidence 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 informationDarwin presented evidence that evolution happens and offered an explanation of how it happens.
(Chapters 16-17) Darwin presented evidence that evolution happens and offered an explanation of how it happens. Evolution the process by which species change over time Theory a broad explanation that has
More information15 Darwin's Theory of Natural Selection 15-1 The Puzzle of Life's Diversity
15-1 The Puzzle of Life's Diversity Study the photo of leaves... What else do you see? How did the Leaf Mantis come to look like decaying leaves? Define evolution in its simplest meaning? Review the meaning
More information16.1 Darwin s Voyage of Discovery Lesson Objectives State Charles Darwin s contribution to science.
16.1 Darwin s Voyage of Discovery Lesson Objectives State Charles Darwin s contribution to science. Describe the three patterns of biodiversity noted by Darwin. Darwin s Epic Journey 1. THINK VISUALLY
More informationComputer Simulations on Evolution BiologyLabs On-line. Laboratory 1 for Section B. Laboratory 2 for Section A
Computer Simulations on Evolution BiologyLabs On-line Laboratory 1 for Section B Laboratory 2 for Section A The following was taken from http://www.biologylabsonline.com/protected/evolutionlab/ Introduction
More informationBoardworks Ltd The first wellknown. evolution:
1 of 7 2 of 7 The first wellknown theory of evolution: 3 of 7 Lamarck s theory of evolution: The Theory of Use/Disuse and Acquired Traits Jean-Baptiste Lamarck (1744-1829) was a French botanist who believed
More informationIII. Evolutionary thinking before Darwin. Influences on Darwin. I. Evolution and its core principles. II. The importance of evolution as a concept
I. Evolution and its core principles Evolution: cumulative changes in traits of a species or population over time. Common descent with modification: The modification of species in successive generations,
More informationMultiple Choice Write the letter on the line provided that best answers the question or completes the statement.
Chapter 15 Darwin s Theory of Evolution Chapter Test A Multiple Choice Write the letter on the line provided that best answers the question or completes the statement. 1. On the Galápagos Islands, Charles
More informationBiodiversity. Descent with Modification Lecture 1 Winter Species Diversity & Unity. Darwin s Journey. Themes in Biology
Biodiversity 1 Descent with Modification Lecture 1 Winter 2014 Globally - ~1.8 million species ~10,000 birds ~ 4629 mammals ~ 8240 reptiles ~ 900,000 insects (named) ~ 300,000 vascular plants ~ 20,000
More informationDescent with Modification Lecture 1 Winter 2014
Descent with Modification Lecture 1 Winter 2014 Biodiversity 1 Globally - ~1.8 million species ~10,000 birds ~ 4629 mammals ~ 8240 reptiles ~ 900,000 insects (named) ~ 300,000 vascular plants ~ 20,000
More informationAdaptation and Change
Adaptation and Change An adaptation is any structure or behavioral trait that improves an organism's success at reproducing and surviving. Most adaptations serve one of three purposes: 1. help an organism
More information8.1 Scientific Contribution to a Theory of Evolution
8.1 Scientific Contribution to a Theory of Evolution SBI3U MS. DE SOUSA Georges- Louis Leclerc (1707-1788) Challenged the idea that life forms were unchanging. He noticed similarities between humans and
More informationDarwin s theory of evolution by natural selection
Percorso interdisciplinare di avviamento al CLIL Darwin s theory of evolution by natural selection CLASSE 5^B Prof. A. Le Piane Prof. F. Minissale Theory of Evolution Evolution: the process of change over
More informationThis image cannot currently be displayed. Unit 5 - Evolution 2. Mr.Yeung
This image cannot currently be displayed. Unit 5 - Evolution 2 Mr.Yeung Who is Charles Darwin? Charles Darwin (1809 1882) English lad Has a degree in Theology from Christ s College in Cambridge Was a naturalist
More information1.A- Natural Selection
1.A- Natural Selection Big Idea 1: The process of evolution drives the diversity and unity of life. EU 1.A- Evolution is change in the genetic makeup of a population over time. EU 1.B- Organisms are linked
More informationUNIT 4: EVOLUTION Chapter 10: Principles of Evolution. I. Early Ideas about Evolution (10.1) A. Early scientists proposed ideas about evolution
UNIT IV Chapter 10 Principles of Evolution UNIT 4: EVOLUTION Chapter 10: Principles of Evolution I. Early Ideas about Evolution (10.1) A. Early scientists proposed ideas about evolution 1. Evolution- process
More informationCh. 22 Warm-Up. 1. What do you remember about Charles Darwin and his scientific ideas? 1. According to Campbell, what is the definition of evolution?
Ch. 22 Warm-Up 1. What do you remember about Charles Darwin and his scientific ideas? 1. According to Campbell, what is the definition of evolution? Descent with Modification: A Darwinian View of Life
More informationMastery. Chapter Content. Natural Selection CHAPTER 5 LESSON 1
Chapter Content Mastery Natural Selection LESSON 1 Directions: Circle the term in parentheses that correctly completes the sentence. 1. Darwin hypothesized that species in the wild evolve through a process
More informationBiology. Evolution: History & Process
Biology Evolution: History & Process Terms: A species is a group of organisms, or population, that can be interbreed & produce fertile offspring. Variations are the differences found within species. Ex:
More informationBIOL 1010 Introduction to Biology: The Evolution and Diversity of Life. Spring 2011 Sections A & B
BIOL 1010 Introduction to Biology: The Evolution and Diversity of Life. Spring 2011 Sections A & B Steve Thompson: stthompson@valdosta.edu http://www.bioinfo4u.net 1 Natural Selection and Variation through
More informationLIFE 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 informationAlong his journey, Darwin kept notes on the variation in different species. His book, Origin of Species, outlined his findings & theories in 1859.
CHARLES DARWIN Born February 12, 1809 At the age of 16 entered medical school in England and flunked out His dad sent him to Univ. of Cambridge in 1827 to study divinity 1831: Darwin left Cambridge and
More informationChanges 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 informationHBio Evolution Practice Test 1
HBio Evolution Practice Test 1 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Which of the following are examples of fossils? a. shells or old bones b.
More informationThe slow, gradual change in a population of organisms over time
The slow, gradual change in a population of organisms over time SB5. Students will evaluate the role of natural selection in the development of the theory of evolution. acquired characteristics inherited
More informationEnvironmental Changes
Environmental Changes Natural events and human impacts cause changes in environmental conditions: Pollution Acid rain Deforestation Climate changes Succession Adaptations Adaptations structures or behaviors
More informationChapter 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 informationWhat does the phrase Only the Strong Survive mean to you??
What does the phrase Only the Strong Survive mean to you?? Essential Questions: How are we Here? What caused so many different living things to populate Earth? Why do Living things become extinct? 1 A.
More informationCh. 15: Evolution - change in a species or the formation of new species over time
Ch. 15: Evolution - change in a species or the formation of new species over time 15.1 Darwin Early Beliefs All species permanent and unchanging Earth only a few thousand years old religion Beliefs based
More informationDarwin 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 information1. E, or change over time, is the process by which modern organisms have descended from ancient organisms
Name Date Period EVOLUTION STARTS WITH? 1. E, or change over time, is the process by which modern organisms have descended from ancient organisms 2. A scientific T is a well supported, testable explanation
More informationChapter 15 Darwin s Theory of Evolution. Essential Question: What evidence did Darwin use to develop his theory of evolution?
Chapter 15 Darwin s Theory of Evolution Essential Question: What evidence did Darwin use to develop his theory of evolution? 15-1 The Puzzle of Life s Diversity How did life change from a prokaryote to
More informationTheory of Evolution. Descent with Modification
Theory of Evolution Descent with Modification Questions, questions, and one more question What does evolution mean? Genetic change of a population over time. Short or long? Both, can you think of some
More informationCharles Darwin & Natural Selection
Charles Darwin & Natural Selection Darwin Born in Shrewsbury, England, in 1809 Studied medicine at Edinburgh University (1825-1827) where the sight of blood and surgery without anesthetics repulsed him
More informationAnthro. 101: Human Biological Evolution. Lecture 2 : Origins of Evolutionary Theory. Prof. Kenneth Feldmeier
Anthro. 101: Human Biological Evolution Lecture 2 : Origins of Evolutionary Theory Prof. Kenneth Feldmeier feldmekj@lavc.edu feldmekj@weebly.com Darwin and the history of evolutionary thinking Historical
More information6/3/2015. Evolution refers to the relative change in the characteristics of populations that occurs over successive generations.
Biology 3201 Evolution refers to the relative change in the characteristics of populations that occurs over successive generations. To put it simply, how a species changes from one generation to the next,
More informationVocab 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 information2/17/17. B. Four scientists important in development of evolution theory
UNIT 4: EVOLUTION Chapter 10: Principles of Evolution I. Early Ideas about Evolution (10.1) A. Early scientists proposed ideas about evolution 1. Evolution- process of biological change by which descendants
More informationBiology 11 UNIT 1: EVOLUTION LESSON 1: WHY EVOLUTION?? TEXTBOOK: UNIT 5
Biology 11 UNIT 1: EVOLUTION LESSON 1: WHY EVOLUTION?? TEXTBOOK: UNIT 5 Objectives: By the end of the lesson you should be able to: Explain why DNA is so important to the theory of evolution State the
More informationWhere did all the diversity come from?
Evolution Where did all the diversity come from? Evolution change over time; the process by which modern organisms have descended from ancient organisms Charles Darwin contributed to the theory of evolution
More informationNOTES 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 informationVoyage of the Beagle
Diversity 0The variety of living things that inhabit the Earth is called biological diversity. 0Evolutionary theory is a collection of scientific facts, observations, and hypotheses. 0This theory is a
More informationDarwin s Theory of Evolution
Chapter 15 Darwin s Theory of Evolution Section 15 1 The Puzzle of Life s Diversity (pages 369 372) This section outlines Charles Darwin s contribution to science It also describes the pattern of diversity
More informationDescent with Modification: A Darwinian View of Life. Part A: Darwin & Natural Selection
Descent with Modification: A Darwinian View of Life Part A: Darwin & Natural Selection What you must know: How Lamarck s view of the mechanism of evolution differed from Darwin s. The role of adaptations,
More informationLearning objectives. Evolution in Action. Chapter 8: Evolution and Natural Selection. By the end of today s topic students should be able to:
ANNOUNCEMENTS Thursday February 13, 2014 Chapter 8: Evolution and Natural Selection Dr. Traver returns next week. Movie on Tuesday afternoon What Darwin Never Knew. Midterm 2 is next week 2/20/2014 Use
More informationREVIEW 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