Unformatted text preview: through time. Evidence was needed and evidence was forthcoming. Evidence for Sources of Variations Comparative Anatomical Studies Homologous structures – Morphological Divergence such as the arm bones of vertebrates that are specialized different functions Analogous structures – Convergent Evolution: Morphology that appears similar but has different origins (wings or insects, bats and birds, body shape of seals and penguins, etc.) The similarity of marsupials to placental animals is another example of convergent evolution. Insect and Bird Wings Ocotillo (US) - Allauidia (Madagascar)...
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- Spring '10
- Evolution, ocotillo, Comparative Anatomical Studies