Term
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Definition
| species tend to be more related by proximity than by climate |
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Term
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Definition
| changes in species over time can be observed in layers of rock (deeper layers contain older fossils than superficial layers) |
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Term
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Definition
| different species look the same as embryos, but then change before birth |
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Term
| embryology: homologous structures |
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Definition
structures that develope from the same embryonic tissue, proving that they share an ancestor; their functions are NOT the same
ex. forelimbs in mammals |
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Term
| embryology: vestigial organs |
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Definition
shrunken homologous structures that no longer serve their original function
ex. femurs in whales |
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