question_answer

                A plant of \[{{F}_{1}}\]-generation has genotype "AABbCC". On selling of this plant, the phenotypic 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.