問題詳情
52. Flower color in sweet peas is controlled by two genes, C/c and E/e. C is dominant to c and E isdominant to e. A plant produces purple flowers only if it contains at least one dominant allele foreach gene； otherwise it produces white flowers. If two plants heterozygous for both genes arecrossed, what will be the phenotypic ratio for purple: white flowers?
(A) 3:1
(B) 4:1
(C) 9:7
(D) 5:3
(E) 15:1
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增