• Question: If every cell has different DNA, then how do new cells get there DNA?

    Asked by Muffin to Natasha on 7 Nov 2017.
    • Photo: Natasha Myhill

      Natasha Myhill answered on 7 Nov 2017:

      Its a really clever system that cells use to multiply called mitosis. The cell first makes a copy of its DNA and then all the chromosomes line up in the middle of the cell and get pulled apart to opposite ends and two new cells are formed from one! Differences in DNA can happen while the cell is copying its DNA, and these are usually very minor changes that only alter the DNA a little bit. There is a really cool video of cells dividing here: https://www.youtube.com/watch?v=L61Gp_d7evo

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