effective population size
- effective population size
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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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effective population size — effective population size. См. эффективный размер популяции. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) … Молекулярная биология и генетика. Толковый словарь.
Effective population size — In population genetics, the concept of effective population size N e 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… … Wikipedia
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Population size — In population genetics and population ecology, population size (usually denoted N ) is the number of individual organisms in a population.The effective population size (Ne) is defined as the number of breeding individuals in an idealized… … Wikipedia
Small population size — Populations with small population size behave differently to larger populations. Often this has various harmful consequences for the survival of that population.Demographic effectsThe influence of stochastic (random) variation in demographic… … Wikipedia
Population bottleneck — followed by recovery or extinction A population bottleneck (or genetic bottleneck) is an evolutionary event in which a significant percentage of a population or species is killed or otherwise prevented from reproducing.[1] A slightly different… … Wikipedia
Effective number of codons — (abbreviated as ENC or Nc ) is a measure to study the state of Codon usage biases in genes and genomes [cite journal |author=Wright F. |title=The effective number of codons used in a gene. |journal=Gene |volume=87 |issue=1 |pages=23–29 |year=1990 … Wikipedia
Population dynamics of fisheries — A fishery is an area with an associated fish or aquatic population which is harvested for its commercial or recreational value. Fisheries can be wild or farmed. Population dynamics describes the ways in which a given population grows and shrinks… … Wikipedia
population — populational, adj. populationless, adj. /pop yeuh lay sheuhn/, n. 1. the total number of persons inhabiting a country, city, or any district or area. 2. the body of inhabitants of a place: The population of the city opposes the addition of… … Universalium
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