What do loci closely linked tend to do?

What do loci closely linked tend to do?

• A. Always assort independently.
• B. Not recombine.
• C. Recombine often.
• D. Become unlinked randomly.

Answer: (B)

Loci that are very close on the same chromosome are considered linked, so they tend to be inherited as a unit because the chance of a crossover between them during meiosis is low. This means recombination between those two loci happens infrequently, and their alleles are not shuffled together as often as unlinked genes. The idea is that tightly linked genes do not recombine often, which is exactly what the option states. Independent assortment happens only for genes on different chromosomes or far apart on the same chromosome, where crossing over can break the association more readily.

Loci that are very close on the same chromosome are considered linked, so they tend to be inherited as a unit because the chance of a crossover between them during meiosis is low. This means recombination between those two loci happens infrequently, and their alleles are not shuffled together as often as unlinked genes. The idea is that tightly linked genes do not recombine often, which is exactly what the option states. Independent assortment happens only for genes on different chromosomes or far apart on the same chromosome, where crossing over can break the association more readily.