Biology Concepts

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artificial selection

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The selection and breeding of organisms for desired traits.

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generation

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A group of individuals born and living at the same time; the time span between the birth of parents and the birth of their children.

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natural selection

Back

The process by which organisms with variations that help them survive in their environment live longer, compete better, and reproduce more than those that do not have the variations.

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population

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All the organisms of the same species that live in the same area at the same time.

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trait

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A distinguishing characteristic of an organism

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variation

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A slight difference in an inherited trait among individual members of a species

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adaptation

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A trait that increases an organism's ability to survive and reproduce in a particular environment.

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ecosystem

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A community of interacting organisms and their physical environment.

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mutation

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A change in the DNA sequence of an organism, which can lead to variations in traits.