Mainly, in science class this week, we did a lot of things. the most intresting thing that we did this week was; We did an online simulation of how to compare DNA samples. When a crime happens, at the crime scene, the cops take a sample of any DNA that is taken to the lab and is testd, by taking a water sample of the DNA and putting it in a whole in the electrogel.Then they put it in a box full of buffer,and send a electric currnt in it and that makes the DNA samplefall into the gel and makes it readible. Then the person evaluting the gel takes a look at it and determines the lenghts of the DNA strands.
This is a great tool to find a criminal who comited a crime. Scince everyone has different lenghs of DNA,when comparing the DNA to a suspect, you can tell whether they are the criminal.
The only negative thing about this this way to catch a criminal, is when a person gets a blood transfusion, and commit a crime,and they leave a little DNA, the person who donated the blood will be taken to jail.
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