DNA, DeoxyriboNucleicAcid is part of our definition of a living organism. It was first isolated by Friedrich Miescher in 1863 and was observed further by James Watson and Francis Crick who eventually figured out the the DNA'S double helix structure in 1953. This double helix matter can be likened to a twisted ladder which are made of bases. The bases are Adenine (A), Thymine (T), Guaninne (G), and Cytosine (C). In DNA, A always paied with T while G always paired with C or, A+T=G+C.
Those bases are sticked by hydrogen. The DNA ladder's sides are made of sugars and phosphate atoms. When the sugar phosphate are attached to the bases, it is called as an nucleotide. sugar+phosphate+bases= nucleotide. There are many conformations of DNA A-DNA, B-DNA, or Z-DNA, but they all likely twists to the right. All of our cells have DNA except red blood cells. DNA holds an important role to living organism identification. That's why DNA is called as THE BLUEPRINT OF LIFE
Watson and Crick
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