Evidence of Evolution (ECAD #1)

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What is the evidence of evolution?

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Evidence of evolution includes fossil records, DNA similarities, and anatomical structures that show how species have changed over time.

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What are homologous structures?

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Homologous structures are similar structures found in different species that have a common ancestor, but may serve different functions.

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What are vestigial structures?

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Vestigial structures are body parts that have lost their original function through evolution, such as the hind leg bones in whales.

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What does DNA comparison among species indicate?

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DNA comparison supports the theory that all species share a common ancestor.

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What is a common ancestor?

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A common ancestor is an early species from which two or more different species have evolved.

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What is the significance of the fossil record?

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The fossil record provides evidence of past life forms and shows the changes in species over time.

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What are analogous structures?

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Analogous structures are body parts in different species that serve similar functions but do not share a common ancestor.

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How do scientists use DNA to study evolution?

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Scientists compare DNA sequences of different organisms to determine evolutionary relationships and common ancestry.

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What is the theory of evolution?

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The theory of evolution states that species change over time through processes like natural selection and genetic drift.

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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.