Meiosis is a form of nuclear division that is involved in sexual reproduction in humans.
Why is meiosis necessary? Without meiosis we would divide and produce cells that were genetically identical, and therefore we would all be clones of our parents.
Meiosis produces 4 daughter nuclei, each with half the number of chromosomes as the parent cell.
What is the DIPLOID number? The diploid number means to have a full set of 46 chromosomes. ALL of your cells in your body, excluding sex cells (sperm/egg) are of the diploid number. Sex cells, or gametes, contain 23 chromosomes and so are HAPLOID, so that offspring are made up of half of their parent cells, e.g. 23 chromosomes from their mother, and 23 chromosomes from their father.
Our 46 chromosomes within our body cells are paired up into homologous pairs. This means you have a MATERNAL chromosome and a PATERNAL chromosome, one from each parent.

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