Divergent vs. Convergent Evolution

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Presentation transcript:

Divergent vs. Convergent Evolution Patterns of Evolution Divergent vs. Convergent Evolution

Divergent Evolution When related species evolve away from their common ancestors to become more successful in their niches. Homologous structures (vertebrate forearms) Finches Red Fox - Woods Kit Fox - Desert

Convergent Evolution Species that are not closely related independently evolve similar traits. Analogous structures (fly wing vs. bird wing)

Convergent Evolution The fusiform body shape has evolved several times in very different organisms.

*Divergent evolution is to homologous structures as convergent evolution is to analogous structures

Question: Are the shells of turtles and snails examples of convergent or divergent evolution? Explain your answer.

Brain size Jaw size Tool use Language development

Lucy