What are the two purines contained within DNA?


The two purines in DNA are adenine and guanine. Within the structure of DNA, purines are paired with complementary pyrimidine bases, forming base pairs that are bonded by hydrogen bonds. These two purines are also found in RNA.

The main chemical structure of purines consists of a six-membered ring made of carbon and nitrogen fused together with a five-membered ring constructed out of the same elements. In contrast to purines, pyrimidines have a single-ring structure. To form base pairs, adenine, which is a six-amino purine, pairs with thymine through two hydrogen bonds. Guanine, which is a two-amino-six-oxy purine, bonds with cytosine through thee hydrogen bonds. In RNA, uracil is the pyrimidine base that pairs with adenine instead of thyamine.

Q&A Related to "What are the two purines contained within DNA?"
two of the bases are purines- adenine and guanine.
Adenine and Guanine are the two purines. You can remember this by
DNA contains two purines, adenine and guanine, which are rings composed of six parts. Purines form several tautomers (related but slightly altered forms of organic compounds) which
PURINES- Adenine and Guanine. PYRIMIDINES- Thymine and Cytosine. Source(s) Biology Student.
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