Abstract:

Abstract : The study detected mtDNA d-loop hypervariable region of 93 sheep, which came from eight chinese sheep breeds and two origin sheep breeds. The study acquired 63 haplotypes, 73 variable sites. single polymorphism sites and concision information sites were 30 and 43,respectively. Expect from deletion site and inserted site, the result included 22 base transitions and 1 base transversion. The rate of base transitions and 1 base transversion is 14.8. By phylogenesis analysis, the haplotypes sequence of Chinese sheep mtDNA D-loop clustered A,B and C subline. It showed that Chinese sheep breed had three maternal origin. The origin area of C subline might china.