question_answer

In Mirabilis, a hybrid for red (RR) and white (rr) flower produces pink (Rr) flower. A  plant with pink flower is crossed with white flower, the expected phenotypic ratio is

A)  red: pink; white (1 : 2 :1)

B)  pink: white (1 :1)

C)  red: pink (1 : 1)

D)  red: white (3:1)

Correct Answer: B

Solution :

 Mirabilis jalapa shows incomplete dominance. The ratio of pink and white flowers will be 1:1.