Ch.22 History of Evolution
|
|
- Denis Tyler
- 5 years ago
- Views:
Transcription
1 Ch.22 History of Evolution Descent with Modification (broad definition) Change in the genetic composition of a population from generation to generation (more narrow definition) Pattern Process Change revealed by data from a range of disciplines (biology, geology, physics, chemistry) Mechanisms that produce the observed pattern of change Are the facts from observation English naturalist Modern organisms have evolved over long periods of time through descent from common ancestors English naturalist Published On the Origin of the Species (1859) Technically On the Origin of Species by Means of Natural Selection, or the Preservation of Favored Races in the Struggle for Life 1
2 English naturalist Independently developed similar theory to Darwin while working in Malay Archipelago Swedish botanist Developed classification system Grouped organisms based on shared observable characteristics (Did not group them by evolutionary ties, but Darwin noted this system often reflected those relationships anyway) Scottish geologist Geologic change takes place slowly, over very long periods of time Earth must be millions, not thousands, of years old English geologist Concept of Uniformitarianism Geologic processes operating today are the same as in the past, and at the same rate (erosion, volcanism, mountain building, etc) Geologic processes occur very slowly, but the same processes occurring now have been occurring for millions of years If Earth can change over time could life change too? French naturalist Lamarck s Hypothesis Organisms change & acquire features to help live more successfully in their environment (Acquired Characteristics) Acquired traits get passed to offspring (Inheritance of Acquired Characteristics) 2
3 Problems Organisms don t drive to be more perfect Species don t become better Evolution does not progress in a predetermined direction Acquired traits cannot be passed to offspring Positives Suggested species were not fixed Tried to explain evolution scientifically with natural processes Link between environment & body structures Set sail on HMS Beagle ( ) Organisms were well suited to their widely diverse environments Organisms more closely resembled other living species in nearby regions Temperate S.A. organisms were more similar to tropical S.A. organisms than temperate European organisms Geologic events reinforced readings from Lyell (Uniformitarianism) Earthquakes caused shifting of coastal land masses in Chile Often found marine fossils thousands of feet up in the Andes mountains 3
4 Emu (Austrailia) Ostrich (Africa) Species vary based on geographic distribution, even in relatively localized regions (Species vary locally) Rhea pennata Rhea americana Land Iguanas ~1000km off coast of Ecuador Islands are close to one another, yet have different ecological conditions Mainland Iguanas Marine Iguanas Dome-back (Isabela) Dome-back (Isabela) Galapagos tortoise shells Isabela Larger island with highlands Humid Low-growing vegetation Saddle-back (Española) Galapagos tortoise shells Española Smaller island, no highlands Dry Less vegetation Saddle-back (Española) 4
5 Finch beak shapes Differ based on food source available on the island Finch beak shapes Differ based on food source available on the island Fossils of extinct animals were different, yet distinctly similar, to living species (still resembled S.A. organisms) Glyptodonts vs. Armadillos Glyptodon / Glyptodont Glyptodonts vs. Armadillos Megatherium vs. Tree Sloths Megatherium 5
6 p.455 1,2 Read Ch We ve done part of it, we ll finish it tomorrow 6
Ch.22 History of Evolution
Ch.22 History of Evolution Descent with Modification (broad definition) Change in the genetic composition of a population from generation to generation (more narrow definition) Pattern Process Change revealed
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 informationSection 9: Darwin s Observations
Section 9: Darwin s Observations Darwin observed differences among island species Darwin observed fossil and geologic evidence supporting an ancient Earth Charles Darwin 1831- the HMS Beagle set sail from
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 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 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 informationEarly Ideas about Evolution
Early Ideas about Evolution Though Darwin gets much of the credit today for his theory of evolution, he? wasn t the first person to come up with the idea! First off, what is evolution? In the most general
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 informationIn 1831 people thought:
In 1831 people thought: A) Earth and life were a few thousand years old B) The planet and species on it had not changed since the beginning of time C) Geologic features showed up due to catastrophic changes
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 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 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 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 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 informationUrsus horribilis is the scientific name for Grizzly Bear Questions 1. Binomial nomenclature is giving an organism 1 name with parts.
Darwin and Evolution Charles Robert Darwin Link History of Evolution: In the mid eighteenth century, Carolus Linnaeus developed a system of classification that called binomial nomenclature that has 2 parts
More information15-1 The Puzzle of Life's Diversity Slide 1 of 20
1 of 20 Evolution is the process by which modern organisms have descended from ancient organisms. * Known as biological change over time A scientific theory is a well-supported testable explanation of
More informationHow Populations Evolve
Chapter 13 How Populations Evolve 1 Biology came of age on November 24, 1859. Charles Darwin published On the Origin of Species by Means of Natural Selection, an assemblage of facts about the natural world.
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 informationDarwin & Evolution by Natural Selection
Darwin & Evolution by Natural Selection Warbler Cactus eater Insect eaters Seed eaters Bud eater 2006-2007 Charles Darwin Proposed a way how evolution works u How did creatures change over time? u by natural
More informationDarwin s Theory of Evolution The Puzzle of Life s Diversity
Darwin s Theory of Evolution The Puzzle of Life s Diversity EVOLUTION: WRITE A DEFINITION: change over time; the process by which modern organisms have descended from ancient organisms THEORY: a well-supported
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 informationDarwin s Theory of Evolution The Puzzle of Life s Diversity Chapter 15
Darwin s Theory of Evolution The Puzzle of Life s Diversity Chapter 15 Image from: Biology by Miller and Levine; Prentice Hall Publishing 2006 EVOLUTION: WRITE A DEFINITION: change over time; the process
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 informationMAIN IDEA: Early scientists proposed ideas about evolution. In a phrase, tell what each scientist did to help develop evolutionary theory.
SECTION 10.1 KEY CONCEPT EARLY IDEAS ABOUT EVOLUTION Study Guide There were theories of biological and geologic change before Darwin. VOCABULARY evolution fossil gradualism species catastrophism uniformitarianism
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 informationChapter 10 Study Guide SECTION 1: Early Ideas about Evolution
NAME Chapter 10 Study Guide SECTION 1: Early Ideas about Evolution BIOLOGY PREAP/GT Match each scientist with the statement that best reflects his ideas about evolutionary theory. 1. Linnaeus a. Species
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 informationDarwin s Theory of Evolution Chapter 16
Darwin s Theory of Evolution Chapter 16 Darwin & Natural Selection Darwin s journey Darwin s Observations On his voyage, Darwin read Lyell s book As he visited different places, he began to see evidence
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 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 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 informationEvidence of Evolution. Chapter 17
Evidence of Evolution Chapter 17 Overview Current species are descendents of ancestral species Evolution is both a pattern and a process Origin of Species Views of Aristotle Fixed species Old Testament
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 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 informationGuided Questions. Who first suggested evolution? Who first suggested creationism? What did humans evolve from?
Guided Questions Who first suggested evolution? Who first suggested creationism? What did humans evolve from? Evolution The Darwinian View of Life The Importance of Evolution This is the most important
More informationEvolution and Darwin
Evolution and Darwin Evolution The processes that have transformed life on earth from it s earliest forms to the vast diversity that characterizes it today - Darwin Old Theories of Evolution Jean Baptiste
More informationCh 22 Descent with Modification Darwin was influenced by the work of others during his time.
AP Biology Ch 22 Descent with Modification Name 22.1 Darwin was influenced by the work of others during his time., the study of fossils, was largely developed by Georges Cuvier. His explanation for why
More informationA) Pre-Darwin History:
Darwin Notes A) Pre-Darwin History: Ancient Greek philosophers such as and believed species were permanent and did not evolve. These ideas prevailed for 2,000 years. In 1859 Charles Darwin published. This
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 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 informationEvidence of Evolution
16.4 Evidence for Evolution Biogeography Biogeography - study of where organisms live, where they and ancestors lived. Two significant patterns: - closely related species separate in different climates.
More informationDarwin and Evolution. Chapter 17. Mid-Eighteenth Century. History of Evolutionary Thought
Darwin and Evolution Chapter 17 Outline History of Evolutionary Thought Darwin s Theory of Evolution Occurrence of Descent Biogeography Natural Selection and Adaptation The Evidence of Evolution Fossil
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 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 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 information1) Overview: Darwin Introduces a Revolutionary Theory
1) Overview: Darwin Introduces a Revolutionary Theory A new era of biology began on November 24, 1859, the day Charles Darwin published On the Origin of Species by Means of Natural Selection The Origin
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 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 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 information16.4 Evidence of Evolution
16.4 Evidence of Evolution Lesson Objectives Explain how geologic distribution of species relates to their evolutionary history. Explain how fossils and the fossil record document the descent of modern
More informationProcesses of Evolution
Processes of Evolution Plato and Aristotle 427-347 BC 384-322 BC Aristotle was the first to classify living animals. He observed patterns suggesting transmutation; new types could arise from older species
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 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 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 informationDescent with Modification: A Darwinian View of life
Descent with Modification: A Darwinian View of life - Charles Darwin published On the origin of Species by means of Natural Selection on November 24, 1859. The Origin of Species focused biologists attention
More informationOur Place in Nature? Voyage of the Beagle. Jeanne Sept 9/8/04. P200 Lecture 1. Historical context for ideas of Charles Darwin
Our Place in Nature? Historical context for ideas of Charles Darwin Charles Darwin Restless young guy! 1831: HMS Beagle Voyage of the Beagle 4 years P200 Lecture 1 Supernatural arguments Linnaeus Natural
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 informationInterest Grabber. Section Go to Section:
Interest Grabber Section 15-1 A Trip Around the World While on his voyage around the world aboard the H.M.S. Beagle, Charles Darwin spent about one month observing life on the Galápagos Islands. There,
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 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 informationObjectives for Chapter: 22
Descent With Modification: A Darwinian View of Life Chapter 22 Objectives for Chapter: 22 1. Understand the following contributions made by the following as they relate to Darwin s Theory of evolution.
More information15.3 Darwin Presents his Case. Biology Mr. Hines
15.3 Darwin Presents his Case Biology Mr. Hines Darwin returned to England with a wealth of new data. He brought many specimens from the Galapagos to further his studies and to present his data to others.
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 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 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 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 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 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 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 informationChapter 7. Evolution and the Fossil Record
Chapter 7 Evolution and the Fossil Record 1 Guiding Questions What lines of evidence convinced Charles Darwin that organic evolution produced the species of the modern world? What are the two components
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 informationOrigin of an idea about origins
Origin of an idea about origins Biological evolution is the process of change during the course of time because of the alteration of the genotype and the transfer of these altered genes to the next generation.
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 informationExempt IF. June 1 st - 2 nd : Senior Finals Trade in dojo points! 5/23/16. Turn in by Thursday, May 26 th Seniors, turn in by May 23 rd
5/23/16 Biology Monday, May 16, 2016 Do-Now: Kahoot Do-Now 1. Write down today s FLT 2. Write three things you need to do for this class in order to raise or maintain your grade. 3. What science class
More informationChapter 15 Evolution
Chapter 15 Evolution Section 1: Darwin s Theory of Natural Selection In this section, you will learn about the series of events leading to Charles Darwin forming his Theory of Evolution. Chapter 15 Evolution
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 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 informationEvolution. In the 18 th century, people became more mobile. Lamarck. Organisms acquire characteristics and pass them on WRONG!!!
Evolution In the 18 th century, people became more mobile Why are the different animals and plants in different geographic areas? How do we explain this diversity? As fossils were discovered: why don t
More informationCHAPTER 2--THE DEVELOPMENT OF EVOLUTIONARY THEORY
CHAPTER 2--THE DEVELOPMENT OF EVOLUTIONARY THEORY Student: 1. In Europe during the Middle Ages, it was believed that. A. all species had evolved from a common ancestor B. evolution was the result of natural
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 informationIII. The principle of natural selection and how this can lead to speciation
Bio 1B Lecture Outline (please print and bring along) Fall, 2008 B.D. Mishler, Dept. of Integrative Biology 2-6810, bmishler@berkeley.edu Evolution Lecture #3 -- Darwin -- Nov. 7, 2008 (ch. 22: 450-467)
More information15 2 Ideas That Shaped Darwin's Thinking
1 of 27 Belief of his time 1. Earth was young (~4,000 years old) 2. Plants/ animals never changed 2 of 27 An Ancient, Changing Earth Fossils challenged both of these Beliefs 3 of 27 Geologist gave evidence
More informationHISTORY OF EVOLUTIONARY THOUGHT OBJECTIVES 1. Describe the two main tenents of Darwin s Origin of Species a. Organisms evolve from one or a few
HISTORY OF EVOLUTIONARY THOUGHT OBJECTIVES 1. Describe the two main tenents of Darwin s Origin of Species a. Organisms evolve from one or a few common ancestors b. Takes place through natural selection
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 information16-1 The Puzzle of Life's Diversity
16-1 The Puzzle of Life's 1 of 20 15-1 The Puzzle of Life's 15-1 The Puzzle of Life's Evolution is the process by which modern organisms have descended from ancient organisms. A scientific theory is a
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 informationEvolution. Darwin s Journey and Observations
Evolution Darwin s Journey and Observations Who was Charles Darwin? English naturalist Took a 5 year voyage on the HMS Beagle Voyage s intent was to explore the coast of South America Darwin took many
More informationBiology Slide 1 of 20
Biology 1 of 20 2 of 20 15-1 The Puzzle of Life's 1. Evolution: process where modern organisms have descended from ancient organisms. 2. scientific theory: well-supported testable explanation of phenomena
More informationEVOLUTIONARY THEORY Evolution affects EVERY living thing All life is descended from the Original Life Form: Ur-slime DARWIN figured out how it could
EVOLUTIONARY THEORY Evolution affects EVERY living thing All life is descended from the Original Life Form: Ur-slime DARWIN figured out how it could happen Had 100 years of precedents Natural History Hobby
More informationDescent with Modification
Descent with Modification Chapter 22 Descent with modification Evolution The earth is a dynamic place (ever-changing). In order for life to survive, it too must change. This represents an interesting parody.
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 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 informationNatural Selection. Charles Darwin & Alfred Russell Wallace
Natural Selection Charles Darwin & Alfred Russell Wallace Darwin s Influences Darwin observed such variations in species on his voyage as a naturalist on the HMS Beagle Darwin s Influences Kept vast diaries
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 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 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 informationAdaptation. 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 informationEVOLUTION. - Selection, Survival, and Drift
EVOLUTION - Selection, Survival, and Drift Evolution Darwin on the HMS Beagle Darwin s role on the ship was as a geologist and companion to the captain. His goal was to collect biological and geological
More information