试题与答案

鹦鹉是一种十分受欢迎的宠物鸟,其艳丽的羽毛颜色一直是人们繁殖培育的重点。现有几只

题型:实验题

题目:

鹦鹉是一种十分受欢迎的宠物鸟,其艳丽的羽毛颜色一直是人们繁殖培育的重点。现有几只雌雄鹦鹉交配组合如下,请分析回答问题:(5分)

(1)鹦鹉羽毛的黄色和绿色是一对             

(2)根据       组可以判断:鹦鹉羽毛的          色是显性性状。

(3)假设鹦鹉羽毛的黄色与绿色分别由基因 A和a控制。乙组后代的基因组成是        

(4)若丙组是用乙组的后代作为亲本进行杂交,若丙组共繁殖1 6只鹦鹉,则理论上有绿色鹦鹉       只。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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