Identification and Patterns of Synapsis of the Autosomally Translocated Y-chromosome of the Indian Mongoose, Herpestes Auropunctatus (Hodgson)

Overview

Journal Chromosoma

Specialty Molecular Biology

Date 1982 Jan 1

PMID 6892106

Citations 4

Authors

R Raman

I Nanda

Affiliations

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Abstract

The multiple sex chromosome system, X1X2Y male/X1X1X2X2 female, in the small Indian mongoose, Herpestes auropunctatus, results from a translocation of a part of Y chromosome to an autosome. It is not possible to distinguish the autosome which harbours the Y chromosome element in the somatic complement. By employing the surface-spreading technique to prophase I meiocytes we have identified the region to which the Y chromosome has been translocated as the short arm of chromosome 9 which is a subtelocentric chromosome. This Y chromosome component lacks heterochromatin and no sex vesicle is organised during meiotic prophase. This suggests to us that Y heterochromatin in mammals may be required for the production of a sex vesicle.

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