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Genetic Drift

Genetic Drift - Genetic drift is stronger in small...

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Genetic’drift’is’stronger’in’small’populations Another’thing’you’can’predict: The probability of fixation is equal to frequency in population Some’populations’reach’fixation’faster’than’others If’one’allele’fixates,’the’other’alleles’are’lost Which’alleles’go’t’fixation’or’loss’may’differ’between’populations Can’lead’to’divergence Amount’of’deleterious’alleles’can’increas e,’especially’in’small’population,’because’ genetic’drift’would’be’stronger’than’natural’selec tion’ i.e.’Greater’Prairie’Chicken’in’Illinois prairie’habitats’were’destroyed’to’make’room’for’farms sets’up’situation’wher e’genetic’drift’acts’quite’strongly low’population’size’led’to’reduced’diversity,’fitness shows’the’mildly’deleterious’alleles’at’multiple’loci
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