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Cell Division (Importance of meiosis (Meiosis produces haploid gametes.…
Cell Division
Importance of meiosis
Meiosis produces haploid gametes. Gametes are reproductive cells that contain haploid number of chromosomes.
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Variation occurs because of 1. crossing over 2. independent assortment of chromosomes 3. random fertilisation
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Meiosis
is a form of nuclear division that produces daughter nuclei containing half the number of chromosomes s the parent nucleus
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Cell Cycle
I nterphase
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Before each cell divides, chromatin threads replicate
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However, for meiosis at Prophase I, crossing over occurs.
Homologous chromosomes (a pair of chromosomes, one from the father and the other from the mother) pair along their whole length
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Growth
is a permanent increase in size accompanied by cell division and differentiation to form tissues & organs
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Mitosis
is a form of nuclear divisions that produces daughter nuclei containing the same number of chromosomes as parent nucleus. (genetically similar)
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