Q. Which process results in genetic variation by exchanging segments between homologous chromosomes during meiosis?
✅ Correct Answer: (B)
Crossing over (recombination)
Explanation: Crossing over during prophase I of meiosis exchanges DNA between homologous chromosomes, creating new allele combinations. Independent assortment also creates variation by random segregation of chromosome pairs, but it does not exchange segments. DNA replication copies genetic material; binary fission is a form of asexual reproduction in prokaryotes.
Explanation by: Mr. Dubey
Crossing over during prophase I of meiosis exchanges DNA between homologous chromosomes, creating new allele combinations. Independent assortment also creates variation by random segregation of chromosome pairs, but it does not exchange segments. DNA replication copies genetic material; binary fission is a form of asexual reproduction in prokaryotes.