Coat-color gene suppresses sexual activity in Icelandic sheep.
Out-of-season lambing in Icelandic sheep occurs at a significantly lower rate among white than among nonwhite (colored) ewes. This limitation on the length of the breeding season is ascribed to a previously unknown effect of the top dominant allele at the agouti locus, Awh, which produces the ordinary white color in sheep.
D000483:Alleles; D000818:Animals; D005260:Female; D005796:Genes; D006200:Hair Color; D010641:Phenotype; D012726:Sexual Behavior, Animal; D012756:Sheep / Q000235:genetics*