What are the chemical components of DNA?

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DNA has a sugar-deoxyribose, 4 type of nitrogen bases-adenine, guanine, cytosine and thymine and phosophate

The Sugar molecule in DNA is basically a ribose sugar. The ribose sugar is a pentose sugar. It is a 5 membered ring. The ring consists of four carbon atoms while the 5′ C atom is outside the ring Positions 1′, 3′ and 5′ in the right have OH groups while the 2′ carbon position has only H. There is no O; hence the sugar is said to be Deoxyribose (no oxygen in the second carbon position).

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