雄性虹鳟鱼中的异形性染色体。
Heteromorphic sex chromosomes in male rainbow trout.
作者信息
Thorgaard G H
出版信息
Science. 1977 May 20;196(4292):900-2. doi: 10.1126/science.860122.
PMID:860122
Abstract
A pair of subtelocentric chromosomes differs in the size of the short arm in male, but not female, rainbow trout (Salmo gairdneri). The morphological similarity of the X and Y chromosomes, and the observation of Y chromosomes intermediate between the X and normal Y, suggest that the sex chromosomes are at an early stage of differentiation in this species.
摘要
在雄性虹鳟鱼（Salmo gairdneri）中，一对亚中着丝粒染色体的短臂大小不同，但雌性中则没有这种差异。X染色体和Y染色体在形态上相似，并且观察到Y染色体处于X染色体和正常Y染色体之间的中间状态，这表明该物种的性染色体正处于分化的早期阶段。
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