Question

if there is an error in either the B or Y genes, producing non-functional versions of either of those proteins, you’d be unable to make protein D, and thus, unable to make hind legs or abdomen in your developing A. maximus. Therefore, an error in either the B or Y genes results in the same mutant phenotype. What’s going on here?

A.inhibited positive regulation of D operon

B.increased negative regulation of D operon

C.complementary gene interaction

D.recessive epistasis gene interaction

Answer 1

Ans is c complementary gene interaction.

Reason: as mutation in either B or Y inhibit the production of D, that means B Or Y are the intermediates in the pathway of synthesis of D .B and Y complement each other's function which is achieved only when both B and Y are present.