Evidence of Evolution and Speciation

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What are analogous structures?

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Structures that have similar functions but different evolutionary origins, such as the wings of a butterfly and the wings of a bird.

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What is common ancestry?

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The concept that different species are descended from a single ancestor.

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What are homologous structures?

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Structures that are similar in different species due to shared ancestry, such as the forelimbs of humans and whales.

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What are vestigial structures?

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Body parts that have lost their original function through evolution, like the human appendix.

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What is embryology in the context of evolution?

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The study of the development of embryos, which can show similarities between different species, indicating common ancestry.

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What is the fossil record?

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The history of life as documented by fossils, providing evidence for evolution and the changes in species over time.

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What is speciation?

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The process by which new species arise from existing species.

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What evidence supports the theory of evolution?

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Fossil records, comparative anatomy, genetic similarities, and embryological development.

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What are the differences between homologous and analogous structures?

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Homologous structures share a common ancestry but may serve different functions, while analogous structures serve similar functions but do not share a common ancestry.

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What is the significance of the lungfish in evolutionary biology?

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Lungfish are considered one of the most primitive vertebrates, providing insight into the transition from water to land.