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):228-35. doi: 10.1139/g91-036.
The mechanisms of homologous chromosome pairing were studied in synaptonemal complex (SC) spreads of F1 Brahman (Bos indicus) x Hereford (Bos taurus) cattle. The most common SC abnormalities were bivalents with partial pairing failure and interlocks. While C-band polymorphisms could underlie most of the SC abnormalities observed in the full-blood cattle, other causes seem also to be contributing in the hybrids. The pattern of the abnormalities indicates that genic differences between the species were probably involved. Pachytene substaging data suggest that in some spreads, early pachytene bivalents with partial pairing failure may achieve complete synapsis or may be converted to interlocks by late pachytene.
在婆罗门牛（Bos indicus）×海福特牛（Bos taurus）F1代牛的联会复合体（SC）铺片中研究了同源染色体配对机制。最常见的SC异常是存在部分配对失败的二价体和互锁现象。虽然C带多态性可能是纯种牛中观察到的大多数SC异常的基础，但其他原因似乎也在杂种牛中起作用。异常模式表明物种间的基因差异可能参与其中。粗线期亚分期数据表明，在一些铺片中，部分配对失败的早期粗线期二价体可能实现完全联会，或者在粗线期末期转变为互锁。
