牛的毛色有�色和棕色若两头�牛交配生出了一头棕色小牛请分析回答1�色和棕色是一对 性状其中 是显性性状2如果用d与d分别表示 Template




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tomski牛的毛色有�色和棕色若两头�牛交配生出了一头棕色小牛请分析回答1�色和棕色是一对 性状其中 是显性性状2如果用d与d分别表示 coloring