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Dominant epistasis in summer squash was observed in 
 

Option: 1

Fruit shape 
 


Option: 2

Fruit colour 
 


Option: 3

Flower shape 
 


Option: 4

Flower colour 
 


Answers (1)

best_answer

 

 

As discussed in Dominant Epistasis -

  • In summer squash, the fruit colour is governed by two genes. 
  • The dominant gene W for white colour suppresses the expres­sion of the gene Y which controls yellow colour.
  • So yellow colour appears only in the absence of W. Thus W is epistatic to Y. 
  • In the absence of both W and Y, green colour develops.
     Hence, the correct option is (b)
Posted by

Ajit Kumar Dubey

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