question_answer

A plant of \[{{F}_{1}}\] generation has genotype AABbCC. On selfing of this plant, the phenorypic ratio in \[{{F}_{2}}\] generation will be

A)  3 : 1                                      

B)  1 : 1

C)  9 : 3 : 3 : 1           

D)         27 : 9 : 9 : 9 : 3 : 3 : 3 : 1

Correct Answer: A

Solution :

Since AABbCC contains only one heterozygous allelic pair Bb, the cross would behave as monohybrid cross-leading to 3 : 1 phenotypic ratio in \[{{F}_{2}}\]. Phenotypic ratio is 3 : 1