Effective population size

In population genetics, the concept of effective population size Ne was introduced by the American geneticist Sewall Wright, who wrote two landmark papers on it (Wright 1931, 1938). He defined it as "the number of breeding individuals in an idealized population that would show the same amount of dispersion of allele frequencies under random genetic drift or the same amount of inbreeding as the population under consideration". It is a basic parameter in many models in population genetics. The effective population size is usually smaller than the absolute population size (N). See also small population size.
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number of individuals contributing alleles to the next generation. = number of mothers in a population; relevant in the calculation of number of generations for the fixation of a mitochondrial allele).

B: (Biologi) ukuran populasi efektif
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