Interspecific backcross mice show sex-specific differences in allelic inheritance.

Interspecific backcross mice show sex-specific differences in allelic inheritance.
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种间回交小鼠在等位基因遗传中表现出性别特异性差异。

DOI:
10.1093/genetics/128.4.813
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发表时间:
1991
期刊:
影响因子:
3.3
通讯作者:
Copeland,NG
Copeland,NG
中科院分区:
生物学2区
文献类型:
--
作者:
Siracusa,LD;Alvord,WG;Bickmore,WA;Jenkins,NA;Copeland,NG

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传递畸变是指二倍体生物中两个等位基因的传递频率与正常的1:1孟德尔分离的差异。传输失真可以延伸到部分或全部染色体。最近发展的种间小鼠回交提供了一个强有力的方法,多位点定位的整个染色体在一个单一的交叉,从而确定扭曲的等位基因遗传。我们使用[(C57 BL/6 J x Mus spretus)F1 x C57 BL/6 J]小鼠的种间回交将分子位点映射到小鼠2号染色体,并且先前发现染色体的远端区域显示等位基因遗传的扭曲。我们现在报告五个位点的定位(Actc-1、D2 Hgu 1、His-1、Hox-4.1和Neb)定位到2号染色体上,除了我们先前在种间回交中定位的Abl、Ada、B2 m、Bmp-2a、Hc、Emv-15、Fshb、Hck-1、Pax-1、Pck-1、Spna-2和Vim基因座之外,用作标记物以测量沿着小鼠2号染色体的约75%的等位基因遗传沿着。统计分析用于识别和划定染色体区域显示传输失真,并确定是否有等位基因遗传性别特异性差异。这些研究为2号染色体等位基因遗传的性别特异性差异提供了证据,并对这种形式的传递失真提出了生物学解释。
Transmission distortion is identified as a difference in transmission frequency of two alleles from the normal 1:1 Mendelian segregation in diploid organisms. Transmission distortion can extend over part or all of a chromosome. The recent development of interspecific mouse backcrosses has provided a powerful method for multilocus mapping of entire chromosomes in a single cross, and consequently for identifying distortions in allelic inheritance. We used an interspecific backcross of [(C57BL/6J x Mus spretus)F1 x C57BL/6J] mice to map molecular loci to mouse chromosome 2 and had previously found that the distal region of the chromosome showed distortions in allelic inheritance. We now report the mapping of five loci (Actc-1, D2Hgu1, His-1, Hox-4.1 and Neb) to chromosome 2, which, in addition to the Abl, Ada, B2m, Bmp-2a, Hc, Emv-15, Fshb, Hck-1, Pax-1, Pck-1, Spna-2 and Vim loci previously mapped in our interspecific backcross, serve as markers to measure allelic inheritance along approximately 75% of mouse chromosome 2. Statistical analyses are used to identify and delimit chromosomal regions showing transmission distortion and to determine whether there are sex-specific differences in allelic inheritance. These studies provide evidence for sex-specific differences in allelic inheritance for chromosome 2 and suggest biological explanations for this form of transmission distortion.
DOI: --
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发表时间: 1988
期刊: Nucleic Acids Res.
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