• Question: is there more than one type of DNA in our bodies?

    Asked by Todd to Daniel, Giovanna, Greg, Kelly, Lowri on 17 Mar 2016.
    • Photo: Lowri Evans

      Lowri Evans answered on 17 Mar 2016:

      DNA, if present, is identical in every cell in our bodies (other than some exceptions such as differences introduced by errors in copying DNA during cell replication, or by changes to the code caused by external factors such as radiation. I say DNA if present, because there are cells where there is no DNA at all – it is fully ejected (like in red blood cells)

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