Tuesday 1 April 2014

My DNA.... by Branaven

DNA
On the 20th March I went to Bancroft’s school for a science fair. My favourite area we looked at was about DNA (deoxyribonucleic acid). I learnt that it could be made from my own saliva! It is a molecule that encodes genetics and is a mix of hydrogen, oxygen, nitrogen, carbon and phosphorus. First, we were given a tray and a small bottle of a transparent liquid (phosphorus). Then, some people gave us sticks and told us to rub it in our mouths and on our gums. We dipped our sticks in the phosphorus and then took the stick out. Then we extracted the main DNA. We then put it in a smaller bottle and tied a piece of string to it to keep it secure.

We also tried to draw patterns in a mirror. They gave us a star to copy in a mirror. We had to try and keep the pencil on the lines but mine looked terrible!

By Branaven

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