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微卫星位点tut1的性别连锁检验[英文]

DOI: 10.3724/SP.J.1145.2011.00404, PP. 404-406

Keywords: 微卫星,空基因,性别连锁,松鸡

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Abstract:

微卫星位点tut1曾被认为位于松鸡科鸟类的常染色体上,只是多态性低于期望值,然而最近发现存在空基因现象.通过在45只斑尾榛鸡(tetrastessewerzowi)亲本和5巢双亲已知的幼鸟上扩增,发现tut1在异配体的雌性中为纯合体,在84%的雄性中为杂合体,而且可从父本遗传给雌性和雄性后代,但从母本只能遗传给雄性后代.通过blast查询,含tut1位点的序列(460bp)与鸡z染色体的序列最相似,分值329,期望值8e-87.以上结果表明tut1位点位于松鸡科鸟类的z染色体上;提示微卫星位点的空基因现象可能来自性别连锁,因此,在发表和应用微卫星位点时应当进行性别连锁检验.表1参17

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