Population genetic variations of haemoglobin in yak, cattle and their hybrids

摘要

Polyacrylamide gel electrophoresis was used to analyse haemoglobin (Hb) polymorphism in six yak populations (Jianza County of Qinghai Province, Sunan County, Tianzhu County, Maqu County, Luqu County and Xiahe County and Gansu Province), two cattle populations (Wuwei City and Linxia County of Gansu Province) and one F_1 hybrid population (Linxia County). The results show that the Hb locus in yak consists of only one genotype (HbAA). At the opposite the Yellow cattle studied show three alleles (Hb~A, Hb~B and Hb~C), with three genotypes detected in the population from Linxia County (HbAA, HbBB, HbBC) and five genotypes detected in the population from Wuwei City (HbAA, HbAB, HbBB, HbBC and HbAC). The F_1 hybrid population has three alleles (Hb~A, Hb~B and Hb~C) with three genotypes (HbAA, HbAB and HbAC). In cattle and in cattle * yak hybrid the commonest allele is Hb~A.