THE MOLECULAR BASIS OF INHERITANCE
STRUCTURE OF NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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adenine
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cytosine
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guanine
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thymine
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uracil
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Detailed explanation-1: -Assertion :Purine bases present in DNA are adenine and guanine.
Detailed explanation-2: -One of two chemical compounds that cells use to make the building blocks of DNA and RNA. Examples of purines are adenine and guanine. Purines are also found in meat and meat products.
Detailed explanation-3: -Solution : Adenine and guanine are purine bases.
Detailed explanation-4: -Because of their structural similarity, we usually refer the nine-member double rings adenine and guanine as purines, and six-member single-ring thymine, uracil, and cytosine are pyrimidines.
Detailed explanation-5: -In DNA, guanine and adenine base pair (see Watson-Crick pairing) with cytosine and thymine (see pyrimidines) respectively. Adenine is also found in adenosine triphosphate (see ATP) and other coenzymes. Two other important biological purines are hypoxanthine and xanthine.