Chromosome Behaviour with Special Reference to Sex Mechanism in Herpestes auropunctatus (Hodgson)

Abstract

In the small Indian mongoose, H. auropunctatus (Hodgson) no racial difference has been found. The diploid number is confirmed to be 35 and 36 in the male and female, respectively. It is concluded that a part of original Y-chromosome is translocated onto an autosome. The X-chromosome forms a trivalent with that particular autosomal bivalent bearing Y. However, certain cells at diakinesis and metaphase I also reveal 17 bivalents and a univalent X, which is due to the precocious disjunction of X from that autosomal bivalent.