2.人类的性别是由性染色体组成决定的如图1中i区段为x染色体与y染色体的同源区段iii为y染色体上特有区段ii为x染色体上特有区段.其实 Template




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tomski2.人类的性别是由性染色体组成决定的如图1中i区段为x染色体与y染色体的同源区段iii为y染色体上特有区段ii为x染色体上特有区段.其实 coloring