Forensic time for 7C

Extracting DNA from an onion is not too tricky an experiment and 7N pupils worked in pairs to do this today.

They recorded their activity by taking photos using the iPads

Grinding onion in salt water and filtering the suspension was the first task.

They needed to capture every part of the process

So they can make a cartoon strip of the experiment afterwards.

The last stage required careful pouring. 

Precision work

Results were compared

The DNA is the thin white layer in the middle