Evidence of Evolution & Cladograms

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What is evolution?

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Evolution is the process through which species change over time through adaptations and natural selection.

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What is a common ancestor?

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

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What are homologous structures?

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Homologous structures are body parts in different species that share a similar structure but may have different functions, indicating a common ancestor.

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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 human appendix.

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What is a cladogram?

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A cladogram is a diagram that shows the evolutionary relationships among various biological species based on similarities and differences in their physical or genetic characteristics.

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What does it mean if two species share a common ancestor?

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It means that they have evolved from the same species at some point in their evolutionary history.

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What is the significance of bone arrangement similarities?

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Similarities in bone arrangements among different species suggest that they share a common ancestor.

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What is the difference between homologous and analogous structures?

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Homologous structures arise from a common ancestor, while analogous structures serve similar functions but do not share a common evolutionary origin.

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What evidence supports the theory of evolution?

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Evidence includes fossil records, genetic similarities, comparative anatomy, and embryonic development.

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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.