Evidence of Evolution

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What is an Analogous Structure?

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Structures that are similar in appearance or function but have different evolutionary origins.

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What is a Homologous Structure?

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Similar structures found in different species that share a common ancestor, even if they serve different functions.

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What are Vestigial Structures?

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Body parts that have lost their original function through evolution, such as the human tailbone.

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What is an example of an Analogous Structure?

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The wings of a butterfly and the wings of a bird, which serve the same function but evolved independently.

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What is an example of a Homologous Structure?

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The forelimbs of humans, whales, and bats, which have different functions but share a common structural origin.

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What is the significance of Vestigial Structures in evolution?

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They provide evidence of an organism's evolutionary past and how species have adapted over time.

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What does the term 'Functional Adaptation' refer to?

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Changes in an organism that enhance its ability to survive and reproduce in its environment.

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What is the Fossil Record?

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A historical sequence of life on Earth, preserved in rocks, that provides evidence of evolution.

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What is the difference between Homologous and Analogous Structures?

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Homologous structures share a common ancestry, while analogous structures do not and have evolved independently.

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What are Embryonic Structures?

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Similarities in the early developmental stages of different species that indicate a common ancestry.