Question

Homologous recombination:

• A. Occurs only between two segments from the same DNA molecule.
• B. Requires that a specific DNA sequence be present.
• C. Requires that one of the duplexes undergoing recombination be nicked in both strands.
• D. May result in strand exchange by branch migration.

Answer 1

The correct option is D May result in strand exchange by branch migration.

Homologous recombination is a type of genetic recombination in which nucleotide sequences are exchanged between two similar or identical molecules of DNA (strand exchange by branch migration). It is most widely used by cells to accurately repair harmful breaks that occur on both strands of DNA, known as double-strand breaks.