- A An exactly equal, reciprocal exchange of DNA occurring between homologs
- B Non-reciprocal transfer: one allele replaced by sequence from homolog
- C A complete deletion of one homolog's entire chromosomal segment
- D An inversion of a chromosomal segment occurring relative to its homolog
Correct answer: B. Non-reciprocal transfer: one allele replaced by sequence from homolog
Explanation: Gene conversion: during DSB repair in meiosis, the broken strand uses the homolog as a template. One allele can be converted to the other sequence non-reciprocally.
Concept context
Mitosis and meiosis: how cells divide for growth, repair, and reproduction.