Question

If two genes are unlinked the recombination frequency will be?

(a) 25%

(b) 50%

(c) 75%

(d) 100%

I had been asked this question in a job interview.

I'm obligated to ask this question of Linkage and Crossing Over in portion Genetic Recombination of Cytogenetics

Answer 1

The correct choice is (b) 50%

To elaborate: When two genes are unlinked they assort independently. So there is an equal chance of production of parental and recombinant phenotype. Thus recombination frequency is 50%.