一个男子把X染色体上的某一突变基因传给他的孙女的概率是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24541' and id < 2107916 and id<>'2107916' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24541' and id > 2107916 and id<>'2107916' order by id asc limit 5