2.如图为某精原细胞一对同源染色体及其上的等位基因下列说法不正确的是 A.非姐妹染色单体之间一定�生了交叉互换b.b与b的分离仅�生在 Template




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tomski2.如图为某精原细胞一对同源染色体及其上的等位基因下列说法不正确的是 a.非姐妹染色单体之间一定�生了交叉互换b.b与b的分离仅�生在 coloring