Sunday, October 21, 2007

DNA


On Monday, when the bell was about to ring, the whole class went out of the classroom to make DNA. What did we use to make DNA? Ourselves!!

We arranged ourselves in a straight line and tried to figure out the 5' and 3' ends. We used a bit of time to review what we have learned about DNA. DNA is made up of purines and pyrimidines. It starts from the 5' end and we always extend the 3' end. They are basic things. Since we have boys and girls in the class, it was easy to demonstrate the structure of DNA. Boys could act as purines while girls acted as pyrimidines. In this way, boys and girls always pair up with each other because purines and pyrimidines pair up with each other.

Later in this week, we went deeper into the structure and discovery of DNA. It was pretty difficult to imagine that the little DNA is the genetic material and thus so essential in our lives. On Friday, we also had the chance to construct a paper model of DNA, but I did not make one because I did not have time.

The next topic is gene technology. What other things will I discover in this chapter?


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