Evidence for Evolution

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What is the evidence for common ancestry in organisms?

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Similarities in DNA, embryonic development, and physical structures among different species suggest a common ancestor.

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What is the fossil record?

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The fossil record is the collection of all fossils found in sedimentary rock, providing evidence of past life and evolution.

Front

What does embryology study in relation to evolution?

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Embryology studies the development of embryos in various organisms, showing similarities that indicate a common ancestor.

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How do fossils provide evidence for evolution?

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Fossils show how life forms present today are different from those in the past, indicating changes over time.

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What are analogous structures?

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Analogous structures are body parts in different species that have similar appearances but different structures and functions.

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What is natural selection?

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Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

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What are homologous structures?

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Homologous structures are body parts in different species that share a common ancestry, even if they have different functions.

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What is speciation?

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Speciation is the evolutionary process by which populations evolve to become distinct species.

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What role do mutations play in evolution?

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Mutations introduce genetic variation, which can lead to new traits that may be beneficial for survival.

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What is the significance of vestigial structures?

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Vestigial structures are remnants of organs or structures that had a function in early ancestors but are reduced or nonfunctional in modern species.