牛的Y染色体形态

Y chromosome morphology of cattle.

作者信息

Potter W L, Upton P C

出版信息

Aust Vet J. 1979 Nov;55(11):539-41. doi: 10.1111/j.1751-0813.1979.tb07026.x.

DOI:10.1111/j.1751-0813.1979.tb07026.x

Abstract

Metaphase chromosomes from cultured lymphocytes were prepared from 246 bulls including Bos indicus, Bos taurus. Bos (Bibos) banteng, Sanga and interspecific and intra-specific breed crosses. Morphology and karyotype position of the Y chromosome for each bull were noted. Karyotype position of the Y chromosome varied between bulls from 25th to 29th pair and the Y chromosomes of Bos indicus and breeds derived from Bos indicus bulls were acrocentric while those of Bos taurus, Sanga and breeds derived from these bulls were metacentric/submetacentric. Two forms of Y chromosome were noted in the Droughtmaster breed. C-banding patterns of the acrocentric Y chromosome were characteristic and enabled easy identification.

摘要

从246头公牛（包括印度瘤牛、普通牛、爪哇野牛、桑加牛以及种间和种内杂交品种）的培养淋巴细胞中制备中期染色体。记录每头公牛Y染色体的形态和核型位置。公牛Y染色体的核型位置在第25对至第29对之间变化，印度瘤牛以及源自印度瘤牛公牛的品种的Y染色体为近端着丝粒染色体，而普通牛、桑加牛以及源自这些公牛的品种的Y染色体为中着丝粒/亚中着丝粒染色体。在抗旱王品种中发现了两种形式的Y染色体。近端着丝粒Y染色体的C带模式具有特征性，易于识别。