Evolution: Change in population over time. LaMarck (French Biologist, 1809) Inheritance of Acquired characteristics: Characteristics an organism develops.

Slides:

Advertisements

Similar presentations

7 Chapter 15. Charles Darwin Ideas of Darwin’s time:

Advertisements

19.2 – Developing the Theory of Evolution

Scientists of Evolution People and Ideas That Contributed to the Theory of Evolution by Natural Selection.

Darwin and Lamarck’s descovery

LAMARCKIAN EVOLUTION © 2008 Paul Billiet ODWSODWS.

Lamarck vs. Darwin Intro to change in organisms. What is a theory? Theory = the most probable explanation for a large set of data based on the best available.

A population showing variation in colour. Continuous or discontinuous?

Population change over time. “Evolution” means change over time. The “Theory of Evolution” says: – Living things on Earth have changed over time. – Many.

Early Theories of Evolution. Theory of Use and Disuse ► Jean Baptiste LAMARCK ( ) ► Theory was based on NEED  Organs needed if environmental.

Aim: Why do living things evolve? I. Early Theories A. Theory of Use and Disuse (Jean Baptiste Lamarck – French biologist) Your thoughts on this Theory?

19.2 Public Exam Questions 6 men and the development of Evolution Theory You can expect 1-3 multiple choice questions from section 19.2.

Evolution Earlier Theories. WHY EVOLUTION? Evolution as a PROCESS is a SETTLED THEORY accepted by biologists all over the world. Evolution provides a.

How Did Other Scientists Influence Darwin’s Thinking? Hw: Rd Q 1-4 p 422.

Biological Evolution SWBAT differentiate between evolution, the theory of evolution, and biological evolution; describe the theory of inheritance of acquired.

The Theory of Evolution. Jean Baptiste Lamarck ~ 1809 Recognized that species were not constant. Believed species changed over time. 1. The Law of Use.

Evolution Evidence shows that living things have changed over time. Evolution is the change in hereditary features of a species over time. Although many.

Darwin, Lamarck and Others Lab pages What is an adaptation? Any kind of inherited trait that improves the chances of survival and reproduction.

Darwin and Lamarck’s theories. Darwin’s theory Natural selection: The theory of evolution states that evolution happens by natural selection. The key.

Early Ideas on Evolution Early Ideas on Evolution 1.

EVIDENCE OF EVOLUTION Evolutionary Theories LAMARCK Developed two theories of evolution: Law of Use and Disuse: the more a part is used, the stronger.

Evolution and Darwin. Evolution processes earliest forms diversityThe processes that have transformed life on earth from it’s earliest forms to the vast.

1 History of Evolutionary Thought. 2 Early Ideas On Earth’s Organisms Aristotle believed species were fixed creations arranged by their complexity Aristotle.

 There are several scientists who observed and predicted the causes behind evolution.  Evolution- the development of new organisms from pre-existing.

Evolution. What is it? Changes that occur in a population over time, in response to the environment.

Lamarck vs. Darwin Introduction to change in organisms.

1 UNIT 5 PART 2: THE MODERN THEORY OF EVOLUTION The evidence shows that evolution occurred but not how or why. There have been different theories.

Evolution and Natural Selection. Population – group of organisms of the same species living together in a given region Natural Selection – process whereby.

Robert Fitzroy Invited to travel around the world (22 years old!) makes many observations of nature main mission of the Beagle was to chart.

Darwin vs. Lamarck. What is a theory? An explanation of some aspect of the natural world based on the best available evidence Summarizes hypotheses that.

Darwin’s Evolution A Theory of Evolution. How did the giraffe get its long neck ? Lamarck had an idea… Lamarck had an idea… Organisms acquire traits.

Diversity, Adaptation and Change in Ecosystems. Selective Advantage?

15.2 EVOLUTION. ANCIENT CHANGING EARTH James Hutton and Charles Lyell Earth is millions of years old Process that changed the earth then are changing.

WHAT ARE SOME THEORIES RELATED TO EVOLUTION?

How was Darwin’s Theory Shaped by other scientists?

How was Darwin’s Theory Shaped by other scientists?

February 28, 2017 Launch: Review book page 162 questions 9-12.

19.2 – Developing the Theory of Evolution

How Do Darwin and Lamarck’s Theories Compare?

How do you think giraffes acquired a long neck over time?

10.1 Early Ideas About Evolution

A Theory to Explain Change Over Time

UNIT 5 PART 2: THE MODERN THEORY OF EVOLUTION

Evolution: How Change Occurs

Modification by descent (homologous structures)

BTY100-Lec#1.2 Evolution-An Introduction Theories of Evolution

LaMarck vs. Darwin.

Theories to explain Evolution

Natural Selection in Populations

L2: Theories of Evolution

COMPARING LAMARCK & DARWIN

How does evolution happen? LAMARCK vs DARWIN

EVOLUTION: DARWIN vs. LAMARCK

Natural Selection Darwin’s Amazing Discovery

Evolution Change Over Time.

Evolution Change Over Time.

Lamarck vs. Darwin Changes in Organisms.

Evolution ( ) Goal: Be able to explain and give examples of the evidence that led Charles Darwin to form his Theory of Evolution.

The Theory of Evolution

What is Evolution? The change in DNA of a population over time.

Environmental Influences

Introduction to change in organisms

Evolution and Natural Selection

Evolution February 26th/27th, 2009.

p. 28 – History of Evolutionary Thought

Darwin vs. Lamarck.

LAMARCKIAN EVOLUTION © 2016 Paul Billiet ODWS.

Aim: What are the main ideas of Darwin’s theory of natural selection

Aim: What are the most important theories on how organisms evolved?

Presentation transcript:

Evolution: Change in population over time

LaMarck (French Biologist, 1809) Inheritance of Acquired characteristics: Characteristics an organism develops through use and disuse could be passed on to its offspring Theory of Use and Disuse: the more a part is used, the stronger and better developed it becomes; the less a part is used, the weaker and less developed it becomes.

LaMarck’s Way Giraffes had short Necks So they stretched their necks to reach food Their necks got longer (acquired characteristic) Their offspring were born with long necks (inheritance of acquired characteristic)

Weismann Cut off tails of mice Offspring born with tails Acquired Characteristics are not inherited