effective population size

effective population size

      in genetics, the size of a breeding population, a factor that is determined by the number of parents, the average number of children per family, and the extent to which family size varies from the average. The determination of the effective population size of a breeding population is necessary for studies of population growth rates and of gene flow.

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  • Population and Human Relations — ▪ 1996 Introduction DEMOGRAPHY       At midyear 1995, world population stood at 5,702,000,000, according to estimates prepared by the Population Reference Bureau. The 1995 figure was about 700 million higher than in 1987, when world population… …   Universalium

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