Question

rosy gene is used as a selectable marker for transformation in Drosophila, it produces an enzyme required for the synthesis of ____________

(a) wing pigment

(b) eye pigment

(c) both eye and wing pigment

(d) thorax pigment

The question was asked during a job interview.

My question is from Drosophila topic in portion Using Other Organisms of Genetic Engineering

Answer 1

The correct answer is (b) eye pigment

For explanation: Rosy gene is used as a selectable marker for transformation in Drosophila, it produces enzyme xanthine dehydrogenase and it is required for pigments of the eye.