Anthrbio 201 1st Edition Lecture 3● The problem: speciation, adaptation● Charles Darwin○ natural selection will account for the problems● Darwin went on Voyage of the Beagle○ south america, rainforests○ encounters capybara, llamas, fossils for armadillo, galapagos land turtle,iguanas○ wondered how all these creatures came to be here on Earth■ all mighty creator?● Natural selection depends on○ reproductive competition■ takes place between members of the same species○ variation in fitness (reproduction)■ a lot of things vary, but some do better than others■ fitness refers to individuals that reproduce○ Heritability● Natural selection is the differential reproduction of individuals based on the heritabledifferences between them● Darwin’s finches○ makes its living by feeding on seeds○ drought affects seed size and hardnessThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.○ 1976 1200 ground finches, 1978 180 ground finches■ massive reduction in their food supply due to drought and availableseeds to feed on○ variation in beak
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