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genetic drift
(english) A cumulative process involving the chance loss of some genes and the disproportionate replication of others over successive generations in a small population, so that the frequencies of genes in the population is altered. The process can lead to a population that differs genetically and in appearance from the original population, also: the occurrence of random change in gene frequencies within a small, isolated population over a short period without mutation or selection. (See also: genetic diversity, gene, population)
dérive génétique
(french) Processus cumulatif qui implique la perte de quelques gènes due au hasard et la réplication des autres sur des générations successives dans une petite population ; ainsi, les fréquences des gènes dans la population sont changées. (See also: genetic diversity, gene, population)
drift genético
(portuguese) Processo cumulativo envolvendo a perca de alguns genes e a replicação excessiva de outros, ao longo de sucessivas gerações numa população pequena, alterando assim a frequência genética da população. Este processo pode dar origem a uma população geneticamente e fenotipicamente diferente da população que lhe deu origem. (See also: genetic diversity, gene, population)

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