Q. If $AAbb \times aaBB,$then phenotypic ratio of its progeny will be
A) 9 : 3 : 3 : 1
B) 1 : 2 : 1
C) 1 : 1 : 1 : 1
D) 4 : 1
Explanation
[image:5d_image9.jpeg] The phenotypic ratio will be 9 : 3 : 3 : 1. Dihybrid test cross gives 1 : 1 : 1 : 1 ratio. Law of segregation gives 1 : 2 : 1 genotypic ratio in $F_{2}$-generation.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.