How can DNA, a submicroscopic molecule, be visualized by the naked eye?
What must be done to extract and isolate DNA from human cheek cells?
What can we conclude about the chemical nature of DNA through isolation techniques?
Materials provided:
centrifuge tubes, disposable cups, sports drink, ethyl acohol, pipettes, cell lysis (detergent) solution, meat tenderizer (enzyme)
How will you use the above materials to extract DNA from your cheek cells?
Extracting DNA from Your Cells
Cells from the lining of your mouth come loose easily, so you will be able to collect cells containing your DNA by swishing a liquid around in your mouth.
To extract DNA from your cells, you will need to separate the DNA from the other types of biological molecules in your cells. You will be using the same basic steps that biologists use when they extract DNA (e.g. to clone DNA or to make a DNA fingerprint). You will follow these 3 easy steps to extract the DNA:
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