Q. Which of the following statements is not true of two genes that show 50% recombination frequency?
A) The genes may be on different chromosomes
B) The genes are tightly linked
C) The genes show independent assortment
D) If the genes are present on the same chromosome, they undergo more than one crossover in every meiosis
Explanation
[Solution from source] A recombination frequency of 50% is the maximum and is what unlinked genes show, so such genes behave as if assorting independently, whether on different chromosomes or far apart on one chromosome with multiple crossovers. Tightly linked genes show very low recombination, so calling them tightly linked is the untrue statement. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.