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2nd line says "Specifically, it is the fraction of all chromosomes in the population that carry that allele." but consider a species with 28 pairs of chromosomes and only one pair has the gene with the allele in question. Presumably it should read "Specifically, it is the fraction of the relevant genes in the population that carry that allele." ? - Rod57 (talk) 17:03, 27 March 2016 (UTC)