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  • The phenotypic ratio obtained when dominant allele of a gene is epistatic over the other gene is Option: 1 9 : 6 : 1<div class='qn

The phenotypic ratio obtained when dominant allele of a gene is epistatic over the other gene is 

Option: 1

9 : 6 : 1


Option: 2

12 : 3 : 1


Option: 3

13 : 3


Option: 4

15 : 1


Answers (1)

best_answer

 

 

As discussed in Inhibitory gene action 

In inhibitory gene action, a dominant allele at one locus can mask the expression of both (dominant and recessive) alleles at a second locus. This changes the phenotypic ratio of F2 to 13 : 3.

Hence, the correct answer is option (c).

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