在锡特卡鹿鼠中XYY初级精母细胞的自发出现。

Spontaneous occurrence of XYY primary spermatocytes in the Sitka deer mouse.

作者信息

Hale D W, Greenbaum I F

出版信息

J Hered. 1986 Mar-Apr;77(2):131-2. doi: 10.1093/oxfordjournals.jhered.a110188.

DOI:10.1093/oxfordjournals.jhered.a110188

Abstract

Analysis of microspread, silver-stained primary spermatocytes from chromosomally and phenotypically normal Peromyscus sitkensis revealed the occurrence of XYY zygotene and pachytene nuclei at low frequency in three of eight individuals examined. Observed pairing configurations of sex chromosomes included a trivalent and a Y bivalent-X univalent. The data suggest that premeiotic nondisjunction may be involved in the origination of XYY chromosomal conditions.

摘要

对染色体和表型均正常的锡特卡鹿鼠的微铺展银染初级精母细胞进行分析，结果显示，在所检查的8只个体中，有3只出现了低频的XYY偶线期和粗线期细胞核。观察到的性染色体配对构型包括一个三价体和一个Y二价体-X单价体。数据表明，减数分裂前的不分离可能与XYY染色体状况的起源有关。