Sixty years ago today, on April 25, 1953, Watson and Crick’s revolutionary paper describing the structure of DNA was published in Nature. Deoxyribo Nucleic Acid (DNA) is the building block for all living organisms on this planet. It is composed of two strands that form a double helix. Each strand has a sugar (deoxyribose)-phosphate backbone and a series of bases. The bases on both strands match up and hold the two strands together by chemical bonds, and the reason the strands form a helical shape is due to the chemical interactions between the bases. There are four bases, adenine (A), guanine (G), thymine (T), and cytosine (C). When the base pairs match up, adenine bonds with thymine and guanine binds with cytosine.
Today I’m celebrating by extracting DNA from bacterial cells and extracting DNA from an agarose gel! What are you going to do to celebrate?