Question

If you cross a eosin male Drosophila with a red eyed female, the daughters would have________________

(a) Eosin eye

(b) Red eye

(c) White eye

(d) No eye colour

This question was addressed to me in an interview for internship.

The question is from Multiple Alleles in chapter Extension and Deviation from Mendelian Genetic Principles of Cytogenetics

Answer 1

Right answer is (b) Red eye

Explanation: Eosin eye colour is recessive to red eye colour. The daughters which are heterozygote would have one copy of each allele and thus will have red eye colour.