果蝇的灰身和白眼r分别受一对等位基因控制bb基因位于常染色体上rr基因位于x染色体上下表是杂交实验结果 P 灰身♀×�身♂ Template




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tomski果蝇的灰身和白眼r分别受一对等位基因控制bb基因位于常染色体上rr基因位于x染色体上下表是杂交实验结果 p 灰身♀×�身♂ coloring