AP Bio Unit 7 Test Review Game

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Genetic Drift

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A mechanism of evolution that refers to random changes in the frequency of alleles in a population, often having a more significant effect in small populations.

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Gene Flow

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The transfer of genetic material between populations, which can occur through migration of individuals or gametes.

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Natural Selection

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The process by which organisms better adapted to their environment tend to survive and produce more offspring.

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Mutations

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Changes in the DNA sequence of an organism's genome, which can lead to new traits and variations.

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Common Ancestor

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An ancestral species from which two or more species have evolved.

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Prezygotic Isolation

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A reproductive barrier that prevents mating or fertilization between species before the zygote stage.

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Bottleneck Effect

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A sharp reduction in the size of a population due to environmental events or human activities, leading to a loss of genetic diversity.

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Analogous Structures

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Body parts in different species that have similar functions but evolved independently, indicating convergent evolution.

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Homologous Structures

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Body parts in different species that share a common ancestry, even if their functions differ.

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Speciation

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The evolutionary process by which populations evolve to become distinct species.