How can I obtain a sample of DNA?
![DNA "unzipping"](/sites/default/files/2019-10/DNA_unzipping.png)
DNA "unzipping" (I, Madprime [CC0], Wikimedia Commons).
![DNA "unzipping"](/sites/default/files/2019-10/DNA_unzipping.png)
DNA "unzipping" (I, Madprime [CC0], Wikimedia Commons).
DNA "unzipping" (I, Madprime [CC0], Wikimedia Commons).
DNA "unzipping" (I, Madprime [CC0], Wikimedia Commons).