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世界人类十大最坏的遗传后果(组图)(3)
2007-03-16 09:24:28 中华网论坛 【 发表评论
  
7.生育双胞胎
13992474_2007031609250969988900.jpg


  同卵双胞胎是一种很少见的现象,但是异卵双胞胎往往会在同一个家庭中反复出现。这种家庭的母亲往往会拥有"超级排卵"的基因,这使得她的身体在排卵期会释放出多个卵子。尽管男性不会受这种基因直接困扰,但是仍有可能遗传给自己的女儿,导致在孙辈中出现双胞胎。这也是为什么双胞胎经常会隔代出现的原因。
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