Observation on the Giemsa G-,C-banding and Sce of Cattle (Bos Taurus) Chromosomes

Metaphase chromosome specimens were made from leukocyte cultures of a newborn calf according to standard technique.The G-and G-banding petterns were described.These results indicated that the diploid chromosome number of cattle cell is 60.With the exception of the sex chromosome which is submetacentric,all the autosomes appeared to be belocentric.The sister chromatid exchanges were visualized by differential staining with Giemsa.The spontaneous frequencies of SCE in the cells were counted.The mean number of SCE per normal cattle cell is 5.9±1.2.