Dollin A E, Murray J D, Gillies C B
Commonwealth Scientific and Industrial Research Organisation, Division of Animal Production, Blacktown, Australia.
Genome. 1991 Apr;34(2):220-7. doi: 10.1139/g91-035.
The levels of meiotic chromosome pairing abnormalities observed in six Australian F1 Bos indicus x Bos taurus cattle crosses (mean = 23%) were significantly higher than those of the full-blood breeds (9%). The abnormal configurations in the F1 hybrids included partial pairing failure, multivalents, interlocks, and inversion pairing. Abnormal configurations were also present, but at lower frequency, in backcross hybrid bulls. The main types of abnormal configurations and the levels of XY-autosomal associations and autosomal asynapsis observed were unlikely to cause significant fertility problems in the hybrids.
在六个澳大利亚F1印度瘤牛×普通牛杂交牛中观察到的减数分裂染色体配对异常水平（平均为23%）显著高于纯种牛（9%）。F1杂种中的异常构型包括部分配对失败、多价体、互锁和倒位配对。在回交杂种公牛中也存在异常构型，但频率较低。观察到的主要异常构型类型以及XY-常染色体联会和常染色体联会消失的水平不太可能在杂种中导致显著的繁殖力问题。
