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Lamarck and Darwin Varying Views of Evolution Courtesy www.lab-initio.com
French naturalist Jean-Baptiste de Lamarck (1744-1829) “The theory of Acquired Traits”
Lamarckism #1 Giraffe seeks food, and stretches its neck to acquire the leaves
Lamarckism #2 Continual stretching results in longer neck. Longer neck is passed on to offspring.
British naturalist Charles Darwin (1809 –1882) “The theory of Natural Selection”
Influences on Darwin 1. British tradition of selective breeding of livestock and domestic pets
Influences on Darwin 2. Observations made while serving on HMS Beagle during a journey to the Galapagos Islands (1831 – 1836).
Galapagos Islands 900 km to Ecuador
Darwin’s Finches Darwin observed differences in the beaks of finches on the islands. He assumed the finches all descended from common ancestors that migrated from the mainland.
Natural Selection: Variation within Offspring
Natural Selection Selective Advantage: The variation provides an advantage to one of the offspring. The others will not pass on their genes.
Questions that Darwin Couldn’t Answer genesallelesWhat was the source of variation within a species? (genes, alleles) mutationsHow did new traits arise? (mutations)
How Does Evolution Happen? After making observations and analyzing evidence, Charles Darwin concluded that natural selection is the mechanism of evolution.
Ideas about Evolution Chapter 6, Section 1. What is a species Again? Group of organisms that can produce fertile offspring. Group of organisms that can.
Change Over Time Essential Question: How do species change over time?
nt/variation/misconceptions/ Things you may not have known about evolution:
Evolution Chapters 13, 14, & 15. Earth has millions of other kinds of organisms of every imaginable shape, size, and habitat. The variety of living things.
Darwin’s Voyage 5.1. Charles Darwin Darwin was the ship’s naturalist on the HMS Beagle in the early 1800’s.
WHAT IS EVOLUTION ? EVOLUTION IS… Change over time Process by which modern organisms have descended from ancient organism THEORY!! Simply stated.
© Boardworks Ltd of 7. © Boardworks Ltd of 7 The first well- known theory of evolution:
8-3 NOTES: DARWIN VS. LAMARCK. BEFORE DARWIN People believed earth was only thousands of years old and organisms did not change. However, this did not.
What is gradualism and punctuated evolution? Agenda for Monday Nov 15 th 1.Finish Fossil Lab 2.Theories of Evolution Notes: Lamarck 1.Lamarck’s Giraffes.
15-2 Theories of Evolution Biological Evolution Change of populations of organisms over generations.
Intro to Theory of Evolution Standard: S7L5a. Explain that physical characteristics of organisms have changed over successive generations.
How Does Evolution Happen? Chapter 7 Section 2. Charles Darwin Naturalist (one who studies nature) on the HMS Beagle Naturalist (one who studies nature)
Regents Biology Insect eaters Bud eater Seed eaters Cactus eater Warbler finch Tree finches Ground finches Darwin & Evolution by Natural Selection.
Evolution: Whats all the fuss about? Terms and Ideas you need to know.
7 Chapter 15. Charles Darwin Ideas of Darwin’s time:
Variation in Cat Traits Brainstorm cat traits, such as fur color, length of fur, ear shape, and face shape that are determined by the genes What do you.
How can fossils show us what happened in the past? Agenda for Thursday May 15 th 1.Fossil lab Timeline due tomorrow.
8-3 NOTES: DARWIN VS. LAMARCK. BEFORE DARWIN People believed earth was only thousands of years old and organisms did not change.
Evolution Biology Biology. What is evolution? Process by which organisms pass on traits from generation to generation Process by which organisms pass.
Regents Biology Insect eaters Bud eater Seed eaters Cactus eater Warbler finch Tree finches Ground finches Darwin’s Theory of Evolution Chapter 15.
Evolutionary Theory A Theory to Explain Change Over Time.
Also use the Vocabulary Review PPT to help understand these important evolution concepts. Study Guide Review!!!!
Robert Fitzroy Invited to travel around the world (22 years old!) makes many observations of nature main mission of the Beagle was to chart.
EVOLUTION Evolution: The genetic change in a species over a long, long time The following scientists came up with possible hypotheses: Jean Baptiste de.
The Theory of Evolution. Jean Baptiste Lamarck ~ 1809 Recognized that species were not constant. Believed species changed over time. 1. The Law of Use.
Charles Darwin Proposed a way how evolution works – How did creatures change over time? – by natural selection Collected a lot of evidence to support.
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.
EVOLUTIONEVOLUTIONEVOLUTIONEVOLUTION. Questions to Ponder TRUE/FALSE 1. You can web your hands if you try. 2. You can acquire traits in your lifetime.
What is Evolution? Evolution is the progressive change in organisms or species over time.
Evolution The process of biological change by which descendants come to differ from their ancestors. Nowicki, 2008.
1 History of Evolutionary Thought. 2 Early Ideas On Earth’s Organisms Aristotle believed species were fixed creations arranged by their complexity Aristotle.
Development of a Theory Development of a Theory Mechanisms of Selection Mechanisms of Selection author unknown address unknown accessed unknown.
Theories of Evolution The Origin of Species or How we came to be.
Evolution Understanding the Diversity of Life – Part 1 1.
Theory of Evolution Chapter 13. Charles Darwin 1831 sent as a naturalist on the HMS Beagle to survey the South American coast Studied animals and plants.
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?
THEORIES OF EVOLUTION. Theories Confirmed through tests and observations Explain a wide variety of data and observations Can be used to make predictions.
How Does Evolution Happen Ch.5, Sec.2. Charles Darwin.
Species change over time. McDougall/Littell. Evolution is the process by which species change over time. Evolution occurs due to changes in the genetic.
Biology 1b Evolution and Environment GCSE CORE Key words: acquired, natural selection.
State Standard SB3C. Examine the evolutionary basis of modern classification systems. History or the Theory (15.1)
Adaptation and Heredity Jean Baptiste Pierre Antoine de Monet, Chevalier de Lamarck ( ) proposed new ideas about evolution. Lamarck believe that.
Early Theories of Evolution. Theory of Use and Disuse ► Jean Baptiste LAMARCK ( ) ► Theory was based on NEED Organs needed if environmental.
Evolution and Darwin. Evolution Change over time processes earliest forms diversity The processes that have transformed life on earth from its earliest.
The Galapagos Islands. Charles Darwin the famous naturalist sailed to the Galapagos Islands in the HMS Beagle in Thirty years later he published.
Charles Darwin Scientist who came up with the theory of Evolution Darwin originally went to school to study medicine, but instead got a degree.
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