What is DNA made of?
1 Answer
May 17, 2017
The DNA is made up of phosphate, pentose sugar and nitrogenous bases.
Explanation:
- The double helix long chain of DNA is made up of phosphate, pentose sugar and four types nitrogenous bases. The nitrogenous bases are adenine, guanine, cytosine and thymine.
- The phophate group of the strand binds two adjoining pentose sugars. The pentose sugar is in turn joined with the nitrogenous bases either purines or pyramidines based on the opposite complementary strand.
- The nitrogenous bases are joined by the the complementary nitrogenous bases of the opposite complementary strand either by two or three hydrogen bonds. The two complementary strands form the double helix DNA strand with 20 angstron diameter.
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