Question

When genotypes at one locus of a chromosome are independent of genotypes at another locus of the same chromosome, the two loci are ________.

1) in linkage equilibrium

2) in linkage disequilibrium

3) nonrandomly associated

4) None of the above.

Answer 1

When two genes are located in close proximity on the same chromosome, their alleles tend to be transmitted together during meiosis. This phenomenon is known as linkage. Linked genes violate the law of independent assortment, meaning that the genotypes at one locus of a chromosome are not independent of genotypes at another locus of the same chromosome.

Step-by-step explanation:

When two genes are located in close proximity on the same chromosome, their alleles tend to be transmitted together during meiosis. This phenomenon is known as linkage. Linked genes violate the law of independent assortment, meaning that the genotypes at one locus of a chromosome are not independent of genotypes at another locus of the same chromosome.

Therefore, the correct answer to the question is 2) in linkage disequilibrium. In linkage disequilibrium, the alleles at two loci on the same chromosome are not randomly associated with each other.