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Mitosis & Meiosis watch

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    Can someone explain to me why the cells produced from mitosis are genetically identical and the cells produced from meiosis are all genetically different? I am also confused with the terms 'Diploid' and 'Haploid' if anyone can help, thanks.
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    (Original post by GCSE2016Troop)
    Can someone explain to me why the cells produced from mitosis are genetically identical and the cells produced from meiosis are all genetically different? I am also confused with the terms 'Diploid' and 'Haploid' if anyone can help, thanks.

    In mitosis, genes in the chromosomes do not 'cross over', or exchange with other genes. In meiosis they do.

    Diploid is a cell with 2 sets or 23 pairs of chromosmes - 46 in total. Haploid cells only have one set of chromosomes, meaning only 23 in total.
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    (Original post by GCSE2016Troop)
    Can someone explain to me why the cells produced from mitosis are genetically identical and the cells produced from meiosis are all genetically different? I am also confused with the terms 'Diploid' and 'Haploid' if anyone can help, thanks.
    Are you GCSE or A level? I just need to know to judge how much detail to give in my answer xD
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    I'm not sure about those terms you mentioned, but I will try to explain miosis and mitosis.

    Miosis is how sex cells (gametes), aka eggs and sperm, recreate. They replicate all their chromosomes so they have 46 pairs instead of 23, then they divide so they are two cells with 23 pairs again. Like in all cells, they now have one chromosome that came from their mother and one that can from their father in each pair of chromosomes. Now both of those cells divide again, with one chromosome from each pair in each cell, so each cell has 23 chromosomes instead of 23 pairs. These are the gametes.

    In mitosis, which is how all the other cells in your body divide, the cell replicated the chromosomes so you have 46 pairs, then divides so you have two new cells with 23 pairs each.

    To summarise:
    Miosis is sex cell division. Replicate-divide-divide
    Mitosis is normal cell division. Replicate-divide.

    Is this what you were looking for? Hope this helps 😝😀


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    (Original post by Don Pedro K.)
    Are you GCSE or A level? I just need to know to judge how much detail to give in my answer xD
    This is the GCSE section
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    (Original post by GCSE2016Troop)
    This is the GCSE section
    Ah okay hahah xD
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    (Original post by PopsIndigo)
    I'm not sure about those terms you mentioned, but I will try to explain miosis and mitosis.

    Miosis is how sex cells (gametes), aka eggs and sperm, recreate. They replicate all their chromosomes so they have 46 pairs instead of 23, then they divide so they are two cells with 23 pairs again. Like in all cells, they now have one chromosome that came from their mother and one that can from their father in each pair of chromosomes. Now both of those cells divide again, with one chromosome from each pair in each cell, so each cell has 23 chromosomes instead of 23 pairs. These are the gametes.

    In mitosis, which is how all the other cells in your body divide, the cell replicated the chromosomes so you have 46 pairs, then divides so you have two new cells with 23 pairs each.

    To summarise:
    Miosis is sex cell division. Replicate-divide-divide
    Mitosis is normal cell division. Replicate-divide.

    Is this what you were looking for? Hope this helps 😝😀


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    These videos might help:

    Mitosis: https://www.youtube.com/watch?v=e4boDp4LE84

    Meiosis: https://www.youtube.com/watch?v=ioc8CUHx8U8
 
 
 

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