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genetic variation

differences in the observable characteristics (phenotype) of the members of a population or species due to spontaneous or environmentally induced genetic alterations or rearrangements. Genetic variation is the basis for natural selection. In one set of conditions, those with certain features will have higher reproductive success, but if conditions change, then individuals with other features might be favored.

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Psychology term of the day

May 26th 2024



1. adj. having the quality of diminishing or retarding a function or activity of a body system or organ.

2. n. any agent that has this quality, especially a CNS depressant.