来自拟暗果蝇性比性状雄性杂交后代的X/O后代的起源。

Origin of X/O progeny from crosses of sex-ratio trait males of Drosophila pseudoobscura.

作者信息

Henahan J, Cobbs G

出版信息

J Hered. 1983 May-Jun;74(3):145-8. doi: 10.1093/oxfordjournals.jhered.a109752.

DOI:10.1093/oxfordjournals.jhered.a109752

Abstract

Males of Drosophila pseudoobscura carrying the sex-ratio chromosome (SR) were studied to determine the cause of X/O male progeny that they produce. It was found that among 3671 X/O progeny virtually all resulted from nullo-X sperm. The experiment also revealed a dramatic clustering of the frequency of X/O progeny among SR/Y males. This is interpreted to indicate that premeiotic events in the male germ line are the cause of nullo-X sperm.

摘要

对携带性比染色体（SR）的拟暗果蝇雄性进行了研究，以确定它们产生X/O雄性后代的原因。结果发现，在3671个X/O后代中，几乎所有都是由无X精子产生的。该实验还揭示了SR/Y雄性中X/O后代频率的显著聚集。这被解释为表明雄性生殖系中的减数分裂前事件是无X精子产生的原因。