Question

____ is homologous recombination more likely to occur between 2 loci that are on the same arm of a chromosome vs 2 loci that are on different arms of a chromosome.

Answer 1

Homologous recombination is more likely to occur between loci on the same arm of a chromosome compared to loci on different arms due to the proximity of the loci and the likelihood of crossover events.

Step-by-step explanation:

During the process of homologous recombination, chromosomes undergo a reciprocal physical exchange of segments at their arms, which is also known as crossing over.

It is more likely for homologous recombination to occur between two loci that are on the same arm of a chromosome as compared to two loci that are on different arms of a chromosome.

This is because loci that are closer together on the same arm have a higher chance of undergoing a crossover event. Genes that are farther apart are more likely to undergo crossing over, resulting in a higher recombination frequency between them.