如图是人类的性别决定图解据图回答下列问题1人类的性别是由染色体决定的.在人体细胞的23对染色体中22对与性别决定无关叫做常染色体 Template




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sketch #3260 sorry to over comment on your blog .haha. I 'm just flnpiipg through your posts after finding you through the KCWC. Recently I had this huge urge to learn to sketch with black ink pens. This cloud drawing is exactly the thing that I feel the need to put on paper. : )


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tomski如图是人类的性别决定图解据图回答下列问题1人类的性别是由染色体决定的.在人体细胞的23对染色体中22对与性别决定无关叫做常染色体 coloring