A POLYMORPHIC SATELLITE SEQUENCE MAPS TO THE PERICENTRIC REGION OF THE BOVINE Y-CHROMOSOME

被引:43
作者
PERRET, J
SHIA, YC
FRIES, R
VASSART, G
GEORGES, M
机构
[1] UNIV LIBRE BRUXELLES,FAC MED,INST RECH INTERDISCIPLINAIRE,B-1050 BRUSSELS,BELGIUM
[2] UNIV ILLINOIS,COLL AGR,DEPT ANIM SCI,URBANA,IL 61801
[3] SWISS FED INST TECHNOL,INST NUTZTIERWISSENSCH,CH-8092 ZURICH,SWITZERLAND
[4] UNIV LIBRE BRUXELLES,HOP ERASME,FAC MED,SERV GENET MED,UNITE GENET MOLEC,B-1050 BRUSSELS,BELGIUM
[5] STATE UNIV LIEGE,FAC VET MED,CHAIRE GENET,B-4000 LIEGE,BELGIUM
关键词
D O I
10.1016/0888-7543(90)90478-D
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Exploiting a serendipitously observed bovine male-specific signal, generated by the mouse pSP64.2.5EI minisatellite probe, we have cloned a bovine (Bos taurus) Y-specific sequence: btDYZ-1. This sequence is composed of 60 tandem repetitions of a motif consisting of two parts: a 40-bp-long unit, showing a mean divergence of 27% between repeats, separated from the next repeat by a TG-rich stretch varying in length between 12 and 63 bp. The number of copies of this repeated motif has been estimated at 6 × 104 per male genome. As a consequence, the corresponding satellite, DYZ-1, might represent approximately 1 20 of the bovine Y chromosome. btDYZ-1 has been mapped by in situ hybridization to the pericentric region of the Y chromosome. It is characterized by a substantial genetic polymorphism and has been shown to be conserved within the Bos and Bison genera of the Bovinae subfamily. This sequence is being used to develop a sexing procedure for bovine preimplantation embryos based on the polymerase chain reaction. © 1990.
引用
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页码:482 / 490
页数:9
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