Evolution

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What is evolution?

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Evolution is the process by which different kinds of living organisms develop and diversify from earlier forms during the history of the earth.

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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 features in different organisms that are similar in structure but may serve different functions, indicating a common ancestor.

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What are analogous structures?

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Analogous structures are features in different organisms that serve similar functions but do not share a common ancestor.

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What is embryology?

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Embryology is the study of embryos and their development, which can show similarities among different species, suggesting a common ancestor.

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What is a vestigial structure?

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A vestigial structure is a body part that has lost its original function through evolution, such as the human appendix.

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What is a fossil?

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A fossil is the preserved remains or traces of ancient organisms, providing evidence for evolution.

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What is genetic drift?

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Genetic drift is a mechanism of evolution that refers to random changes in the frequency of alleles in a population.

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What is speciation?

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Speciation is the process by which new species arise from existing species due to evolutionary changes.

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What is a common ancestor?

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