MHT CET Biology question

Biology Principles of Inheritance and Variation MHT CET

You cross a p+/v+, p+/v+ male Drosophila to a p-/v-, p-/v- and obtain the hybrid. Now you cross the male with double recessive female. What will be the recombination phenotype in F2?

(A)P+/v+ p-/v- only
(B)P+/v+ p-/v- and p-/v- p-/v-Correct
(C)P+/v+ p-/v- and p-/v- p-/v- also P+/v- p-/v-
(D)P+/v+ p-/v- and p-/v- p-/v- also p-/v+ p-/v- and p-/v- p-/v-

Answer: (B)

Solution

Crossing over does not occur in male Drosophila, so the male forms only the parental gametes p+v+ and p-v-; the test-cross progeny are therefore only the parental

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-059545