Karyotyping of Jersey and crossbreed bulls

Studies on karyotype were made on 2 Jersey and 6 crossbred (3/4 Jersey x 1/4 Red Sindhi) bulls maintaned at the Intensive Cattle Development Project, Khanapara, Guwahati. The diploid number of chromosomes was found to be 60 in both the genetic groups. The normal karyotype was characterized by 29 pairs of acrocentric autosomes of continuously decreasing length, the second largest submetacentric X-chromosome and the metracentric Y -chromosome occupying a position between autosomes 26^th and 27^th No significant difference in the relative length of chromosomes between genetic groups was observed.