Male sterility and an autosomal translocation in Romney sheep

Publisher Website
Google Scholar
Abstract
Five closely related Romney sheep are described. All showed centric fusion of two acrocentric chromosomes, forming a submetacentric chromosome. One sheep, a ram, had abnormally shaped testicles, was sterile and showed persistent aspermatogenesis. Meiotic chromosome studies on primary spermatocytes from this sheep showed 24 or 25 bivalents and a trivalent instead of the 27 bivalents seen in normal rams. The sex bivalent was not involved in the trivalent, which confirmed this to be an autosomal translocation. It is suggested that the sterility of this sheep was possibly genetically determined in the same way as in male mice with a similar chromosome translocation.

This publication has 0 references indexed in Scilit: