DNA replication occurs during the S phase of meiosis-I, not meiosis II.
Meiosis-I happens when homologous chromosomes pair up, undergo recombination (crossing over), and divide into two daughter cells.
The daughter cells then undergo meiosis II without undergoing DNA replication again.
In sexually reproducing organisms, meiosis is a specialized cell division that produces four haploid cells (gametes) from a diploid cell through two rounds of division, known as meiosis I and meiosis II.
During meiosis-I, the pairing of homologous chromosomes occurs (synapsis), followed by crossing over (recombination) between non-sister chromatids of homologous chromosomes.
Genetic variation is a result of these genetic exchanges.
Upon separation of homologous chromosomes, two daughter cells are formed, each containing a pair of replicated chromosomes.
Similar to mitosis, meiosis-II involves the separation of sister chromatids. The two daughter cells from meiosis-I enter meiosis II.
Meiosis-II separates sister chromatids, which results in four haploid cells (gametes) with unique genetic combinations.
There are two stages of meiosis: meiosis-I and meiosis-II.
DNA replication occurs during meiosis-I.
The pairing of homologous chromosomes and recombination occur during meiosis-I.
