题目内容（请给出正确答案）

[单选题]

Predict the phenotypic ratio of the F 2 progeny of a cross between two colorless plants, one homozygous for A and the other homozygous for B

A.3 colored : 1 colorless

B.9 colored : 7 colorless

C.9 colorless : 7 colore

D.15 colorless : 1 colored

提问人：网友lixin080108 发布时间：2022-01-07

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· 有5位网友选择 B，占比55.56%
· 有2位网友选择 C，占比22.22%
· 有2位网友选择 D，占比22.22%

ABCD

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