20.某一对相对性状受一对等位基因控制如果这一对等位基因位于常染色体上则在生物种群中有aaaaaa三种基因型如果只存在于x染色体上 Template




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tomski20.某一对相对性状受一对等位基因控制如果这一对等位基因位于常染色体上则在生物种群中有aaaaaa三种基因型如果只存在于x染色体上 coloring