坦噶尼喀口孵非鲫（Oreochromis tanganicae）中的性连锁标记和微卫星基因座重复
Sex-linked markers and microsatellite locus duplication in the cichlid species Oreochromis tanganicae.
作者信息
Cnaani Avner, Kocher Thomas D
机构信息
Department of Poultry and Aquaculture, Institute of Animal Science, Agricultural Research Organization, Bet-Dagan 50250, Israel.
出版信息
Biol Lett. 2008 Dec 23;4(6):700-3. doi: 10.1098/rsbl.2008.0286.
Abstract
Cichlid species of the genus Oreochromis vary in their genetic sex-determination systems. In this study, we used microsatellite DNA markers to characterize the sex-determination system in Oreochromis tanganicae. Markers on linkage group 3 were associated with phenotypic sex, with an inheritance pattern typical of a female heterogametic species (WZ-ZZ). Further, locus duplication was observed for two separate microsatellite markers on the sex chromosome. These results further advance our understanding of the rapidly evolving sex-determination systems among these closely related tilapia species.
摘要
丽鱼科罗非鱼属的物种在其遗传性别决定系统上存在差异。在本研究中，我们使用微卫星DNA标记来表征坦噶尼喀罗非鱼的性别决定系统。连锁群3上的标记与表型性别相关，具有雌性异配物种（WZ-ZZ）典型的遗传模式。此外，在性染色体上观察到两个独立的微卫星标记存在基因座重复。这些结果进一步推进了我们对这些密切相关的罗非鱼物种中快速进化的性别决定系统的理解。
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