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Meiosis is a special type of cell division that only occurs in reproductive organs. Meiosis produces reproductive cells called gametes (eggs or sperm) which can form a zygote with chromosomes from both parents.
Many protists reproduce by mitosis until their environment deteriorates, then they undergo sexual reproduction to produce a resting zygotic cyst. Phases of Meiosis | Back to Top. Two successive nuclear divisions occur, Meiosis I (Reduction) and Meiosis II (Division). Meiosis produces 4 haploid cells. Mitosis produces 2 diploid cells. The old name for meiosis was reduction/ division. Meiosis I reduces the ploidy level from 2n to n (reduction) while Meiosis II divides the remaining set of chromosomes in a mitosis-like process (division).