人类的皮肤含有�色素皮肤中�色素的多�由两对独立遗传的基因所控制显性基因a和b可以使�色素量增加两者增加的量相等并且可以累加.一个基因 Template




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tomski人类的皮肤含有�色素皮肤中�色素的多�由两对独立遗传的基因所控制显性基因a和b可以使�色素量增加两者增加的量相等并且可以累加.一个基因 coloring