Sunday, February 14, 2010

DNA Extraction and Precipitation at the Springfield, MO Discovery Museum

Here we got to swish water in our mouths for 30 seconds. The water and whatever we managed to collect in it while swishing became the focus of our study. The swishy liquid was poured into a test tube. A detergent was then used to disolve the cell walls and nucleus envelope so that the DNA strands would be released. Alcohol was then added to the whole process, which caused the DNA to precipitate together. Here you can see the collection of little white dots near the top of the contents of the tube. Before it looked like this, the little white dots aligned in a way that they looked like spiderweb strands. And he wants to be a scientist!

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