Patterns of Evolution

When two species share a common ancestor but they develop different traits to live in different environments.

• Convergent evolution

• Divergent evolution

• Coevolution

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When two species do not share a common ancestor but develop similar traits to live in a similar environment.

• Convergent evolution

• Divergent evolution

• Coevolution

When one species evolves in response to the evolution of another species.

• Convergent evolution

• Divergent evolution

• Coevolution

Results in analogous structures like the flippers of whales and fins of sharks.

• Convergent evolution

• Divergent evolution

• Coevolution

Results in a symbiotic relationship like flowers and their pollinators.

• Convergent evolution

• Divergent evolution

• Coevolution

Results in homologous structures like the arm bones of humans and cats.

• Convergent evolution

• Divergent evolution

• Coevolution

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Ants are the correct size and weight needed to open the flowers for the peony plant. The peony plant provides food for the ant and the ant fertilizes the peony’s flowers. This is an example of ...

• Convergent evolution

• Divergent evolution

• Coevolution

In the ocean around Antarctica, fish survive the cold water by using glycoproteins that circulate blood and keep them from freezing. Some worms that live in the Arctic ocean also make “antifreeze” proteins. This is an example of ...

• Convergent evolution

• Divergent evolution

• Coevolution

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The Galapagos tortoises share a common ancestor but have necks of differing lengths to best reach food in their environment. This is an example of ...

• Convergent evolution

• Divergent evolution

• Coevolution

Tags

NGSS.HS-LS4-1

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