Question

How is homologous recombination initiated in eukaryotes?

a) by single-strand breaks in both homologs
b) by a single-strand break in one homolog
c) by a double-strand break in one homolog
d) by double-strand breaks in both homologs

Answer 1

Homologous recombination in eukaryotes is initiated by a double-strand break in one homolog. This break allows for the exchange of genetic information between homologous chromosomes during meiosis, resulting in genetic diversity.

Step-by-step explanation:

Homologous recombination in eukaryotes is initiated by a double-strand break in one homolog. This break allows for the exchange of genetic information between homologous chromosomes during meiosis, resulting in genetic diversity. Repairing the break accurately by exchanging alleles between homologous chromosomes is essential for the survival and diversity of species.