question_answer

In sweet peas, genes C and P are necessary for colour in flowers. The flowers are white in the absence of either or both the genes. What will be the percentage of coloured flowers in the offspring of the cross Cc pp × cc Pp [CMC Vellore 1994]

A) 100%

B) 75%

C) 25%

D) 50%

Correct Answer: C

Solution :

Ccpp × ccPp Male gametes are Cp, cp Female gametes are cP, cp 1 coloured and 3 white i.e., 25%