Variations in the length of the Y chromosome and the seminal attributes of Karan Fries bulls.

Abstract excerpt

Fresh semen and blood samples from 20 Karan Fries bulls (4-6 years of age), maintained at the Artificial Breeding Complex of the National Dairy Research Institute, Karnal, were collected for one year. All the bulls had 60 chromosomes, comprising 58 acrocentric autosomes and 2 sex chromosomes, with X as the larger and Y as the smaller submetacentric. The mean lengths of Yp and Yq; the total length of the Y...

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