Hello again from The Dolan Learning Center at Cold Spring Harbor.This past week has been a blur of extracting, amplifying, slicing, and analyzing DNA. Last week, we analyzed several different sections of the human genome (that means all of the DNA that we have in our cells).
One of the great experiments was something the police and FBI use to solve crimes. I was able to extract and amplify a section of the DNA that is called D1S80. Everybody gets two copies of this gene (one from mom, one from dad) and there are lots of different kinds you can inherit. It is a section of DNA that repeats itself. So, some people have 18 repeats, others have 19, 20, 21, all the way up to 44. So this is one of the ways that geneticists can tell two people apart from each other. My results were that I have a copy that is 21 and one that is 27.
In the picture you can see our instructor pointing to the results we saw in our gel electrophoresis. You can learn more about this by going to this link: www.dnai.org, and clicking on Applications, and then Human Identification.We begin work with nematodes or round worms today. I'll post more tomorrow when I have some great pictures!
1 comment:
wow mr.jordan!..you have been doing pretty cool stuff over the break! :D
i wish we could this FBI experiment in class..it would be sooo cool if we could!...can we?? u r the best teacher after all!
Post a Comment