For primer 2-2, three genotypes (GG, GH and HH) were detected in Dorset and German Mutton Merino sheep, genotype GG was detected in other three sheep breeds.

• 引物2-2,多赛特羊和德国肉用美利奴羊出现GG、GH和HH基因型,而其余3个绵羊品种只出现GG基因型;