THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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guanine and adenine
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guanine and thymine
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cytosine and guanine
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adenine and thymine
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Detailed explanation-1: -The purines, adenine and guanine, are larger and have two a one-ringed structure, while the pyrimidines, thymine and cytosine, have two rings and are smaller.
Detailed explanation-2: -Nitrogenous Bases : Example Question #5 Adenine and guanine are purines (contain two rings). Thymine, cytosine, and uracil are pyrimidines (contain one ring).
Detailed explanation-3: -The nitrogenous bases with two ringed structures are the purines and thus are bigger than the pyrimidines. The purines comprise of nine-membered structure with four typical nitrogen atoms. In contrast, pyrimidines have a single ring structure and are smaller than purines.
Detailed explanation-4: -Adenine (A) and guanine (G) are double-ringed purines, and cytosine (C) and thymine (T) are smaller, single-ringed pyrimidines. The nucleotide is named according to the nitrogenous base it contains.