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Difference between mitosis and meiosis

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Difference between mitosis and meiosis

    • Posted by Kanishk Khurana 2 years, 10 months ago

    CBSE > Class 11 > Biology
    • 1 answers

    Sia ? 2 years, 10 months ago

    Mitosis Meiosis
    Interphase
    Each chromosome replicates. The result is two genetically identical sister chromatids (However, do note that interphase is technically not a part of mitosis because it takes place between one mitotic phase and the next) Chromosomes not yet visible but DNA has been duplicated or replicated
    Prophase
    Prophase –Each of the duplicated chromosomes appears as two identical or equal sister chromatids, The mitotic spindle begins to form. Chromosomes condense and thicken Prophase I – crossing-over recombination – Homologous chromosomes (each consists of two sister chromatids) appear together as pairs. Tetrad is the structure that is formed. Segments of chromosomes are exchanged between non-sister chromatids at crossover points known as chiasmata (crossing-over)
    Metaphase
    Metaphase -The chromosomes assemble at the equator at the metaphase plate Metaphase I Chromosomes adjust on the metaphase plate. Chromosomes are still intact and arranged as pairs of homologues
    Anaphase
    Anaphase – The spindle fibres begin to contract. This starts to pull the sister chromatids apart. At the end of anaphase, a complete set of daughter chromosomes is found each pole Anaphase I Sister chromatids stay intact. However, homologous chromosomes drift to the opposite or reverse poles
    Mode of Reproduction
    Asexual Reproduction Sexual Reproduction
    Occurrence
    All the cells Reproductive cells
    Function
    General growth and repair, Cell reproduction Genetic diversity through sexual reproduction
    Cytokinesis
    Occurs in Telophase Occurs in Telophase I and in Telophase II
    Discovered by
    Walther Flemming Oscar Hertwig

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