Evolution (Evidence and Mechanisms)

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What is Gene Flow?

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Gene flow is the transfer of genetic variation (alleles) from one population to another, which tends to increase genetic diversity.

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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 wisdom teeth in humans.

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What is the fossil record?

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The fossil record is the collection of all known fossils, which provides evidence of the history of life on Earth, found in sedimentary rock.

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What are Analogous Structures?

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Analogous structures are body parts in different species that perform similar functions but do not share a common evolutionary origin.

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What is Natural Selection?

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

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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 a Homologous Structure?

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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 the significance of Mutations in evolution?

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Mutations are changes in DNA that can lead to new traits in organisms, providing raw material for evolution.

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What is Non-random Mating?

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Non-random mating occurs when individuals select mates based on specific traits, affecting the genetic structure of a population.

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How does Gene Flow affect genetic variation?

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Gene flow tends to increase genetic variation by introducing new alleles into a population.