题目人类的性别主要由 Y 染色体上的 Sry 基因决定通过男性生殖器官和第二性征表现出来1男性体细胞中性染色体的同源配对区与特异区 Template




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Try and sketch some of theseVolleyball, Sad girl, Tree house, Pancakes, Disco, Ribbons, Pigeon, Triplets, Mattress, Army, view more ideas


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tomski题目人类的性别主要由 y 染色体上的 coloring