MEIOSIS ▸ Meiosis involves two sequential cycles of nuclear and cell division called meiosis I and meiosis II but only a single cycle of DNA replication. ▸ Meiosis I is initiated after the parental chromosomes have replicated to produce identical sister chromatids at the S phase. ▸ Meiosis involves pairing of homologous chromosomes and recombination between non-sister chromatids of homologous chromosomes ▸ Four haploid cells are formed at the end of meiosis II. Stages of Meiosis (Meiosis consists of two divisions) (i) Meiosis I (Reductional Division): During meiosis I, the number of chromosome is reduced to half. The homologous pairs of chromosomes get separated and cells become haploid. The two chromatids of the chromosome become genetically different due to crossing over. Meiosis I is followed by meiosis II at the end of which four haploid cells are formed