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  • In a dihybrid cross involving two genes with supplementary gene interaction, what is the expected phenotypic ratio of the F2 generation?Option: 1 9:3

In a dihybrid cross involving two genes with supplementary gene interaction, what is the expected phenotypic ratio of the F2 generation?

Option: 1

9:3:3:1

 


Option: 2

9:7
 


Option: 3

12:3:1

 


Option: 4

15:1


Answers (1)

best_answer

In a dihybrid cross involving two genes with supplementary gene interaction, the expected phenotypic ratio of the F2 generation is 15:1. This ratio results from the interaction of the recessive alleles of both genes being required to produce the novel phenotype. Hence option D is the correct answer.

Option(A) In a dihybrid cross involving two genes with supplementary gene interaction, the expected phenotypic ratio of the F2 generation is 15:1. Hence option A is incorrect.

Option(B)  In a dihybrid cross involving two genes with supplementary gene interaction, the expected phenotypic ratio of the F2 generation is 15:1. Hence option B is incorrect.  

Option(C)  In a dihybrid cross involving two genes with supplementary gene interaction, the expected phenotypic ratio of the F2 generation is 15:1. Hence option C is incorrect.


 

Posted by

Devendra Khairwa

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