Which of the following most likely accounts for the majority of the recombination events during both DNA repair and meiosis?
A) A nick in only one strand of the DNA
B) Double-stranded breaks in DNA
C) DNA gap repair synthesis
D) Heteroduplex formation

Question

Quizplus · Accepted Answer

Double-stranded breaks in DNA are known to be the primary drivers of recombination events during both DNA repair and meiosis. These breaks result in the exchange of genetic material between homologous chromosomes or sister chromatids, leading to the formation of recombinant DNA molecules. Nicks in only one strand of the DNA and DNA gap repair synthesis can also lead to recombination, but they are not as common or as potent as double-stranded breaks. Heteroduplex formation is a result of recombination, rather than a cause of it, and therefore cannot account for the majority of recombination events.

Which of the Following Most Likely Accounts for the Majority