Answer: Non-reciprocal transfer: one allele replaced by sequence from homolog.
- 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.
The cell cycle: G1 (growth and preparation), S (DNA replication, chromosome number stays 2n but DNA content doubles), G2 (final checks before division), and M (mitosis itself) - together, G1+S+G2 make up interphase.
Concept context
Mitosis and meiosis: how cells divide for growth, repair, and reproduction.