question_answer

If in a garden pea plant, a cross is made between red flowered and white flowered plants. What will be the phenotypic ratio in \[{{F}_{2}}\]  generation [AFMC 2000; CBSE PMT 2002;Kerala CET 2003]

A) 1 : 2 : 1

B) 9 : 3 : 3 : 1

C) 3 : 1

D) 1 : 3

Correct Answer: C

Solution :

  After selfing RR = Homozygous for red flower Rr and rR = Heterozygous for red flower rr = homozygous for white flower 3 Red and 1 White = 3 : 1