Comparative Study on Chromosome Karyotype of Goat and Sheep

In this paper,chromosomal karyotype of Guanzhong dairy goat and Tong sheep was studied by using the peripheral blood lymphocyte culture method.The results showed that the number of the chromosomes in Guanzhong dairy goat was 2n=60.There were 29 pairs of autosomes and I pair of sex chromosome, all 29 pairs of autosomes were acrocentric chromosomes, X chromosome was the second largest telocentric chromosome and Y was the smallest and the only one metacentric chromosome in all chromosomes.The number of the chromosomes in Tong sheep was 2n=54.There were 26 pairs of autosomes and 1 pair of sec chromosome,among 26 pairs of autosome, of which 3 pairs were metacentric chromosomes,23 pairs were telocentric chromosomes;X chromosome was the largest subtelocentric chromosome and Y chromosome was the smallest submetacentric chromosome.