CHROMOSOME CONSERVATION IN THE BOVIDAE
CHROMOSOME CONSERVATION IN THE BOVIDAE
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DOI：
10.1093/oxfordjournals.jhered.a111215
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发表时间：
1992-07-01
影响因子：
3.1
通讯作者：
WOMACK, JE
中科院分区：
文献类型：
--
作者：
GALLAGHER, DS;WOMACK, JE
将溴脱氧尿嘧啶核苷掺入早期复制的DNA中，从成纤维细胞培养中获得12种牛的染色体。构建0带核型，并尽可能按照牛的标准核型对常染色体臂进行编号。二倍体染色体数目在30到60之间，然而，基于条带的相似性，染色体-臂的同源性很广泛。以牛的核型为标准，只在第3、9和14号染色体上发现了常染色体臂差异，表明可能的共线断裂。虽然染色体臂同源性广泛，但共享同源双臂染色体的情况很少见。一些牛的单臂同源双臂染色体的共性表明，某些情况下的生殖隔离和物种形成可能是中心性融合事件的结果。
The chromosomes of 12 bovid species were harvested from fibroblast cultures after incorporation of bromodeoxyuridine into early replicating DNA. 0-band karyotypes were constructed, and, when possible, autosomal arms were numbered according to the cattle standard karyotype. Diploid chromosome number ranged from 30 to 60, yet, based on band similarity, chromosome-arm homologies were extensive. Employing the cattle karyotype as the standard, autosomal-arm differences indicative of possible syntenic disruption were noted for only chromosomes 3, 9, and 14. While chromosome-arm homologies were extensive, shared homologous biarmed chromosomes were rare. The commonness of monobrachially homologous biarmed chromosomes among some bovids (e.g., Antilopinae) suggested that reproductive isolation and speciation in some instances might have resulted from centric fusion events.