THE MOLECULAR BASIS OF INHERITANCE
THE SEARCH FOR INHERITABLE MATERIAL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cytosine and Thymine
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Adenine and Thymine
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Adenine and Guanine
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Cytosine and Guanine
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Detailed explanation-1: -Purine are adenine and guanine whereas pyrimidine are cytosine, thymine and uracil.
Detailed explanation-2: -Purines and pyrimidines are the nitrogen bases that hold DNA strands together through hydrogen bonds. They pair together through complementary pairing based on Chargaff’s Rule (A::T and G::C). The purines in DNA are adenine and guanine, the same as in RNA.
Detailed explanation-3: -Adenine (a purine) and Thymine (a pyrimidine) always form a pair, while Guanine (a purine) and Cytosine (a pyrimidine) form another pair.
Detailed explanation-4: -The two-carbon nitrogen ring bases (adenine and guanine) are purines, while the one-carbon nitrogen ring bases (thymine and cytosine) are pyrimidines.
Detailed explanation-5: -Under normal circumstances, the nitrogen-containing bases adenine (A) and thymine (T) pair together, and cytosine (C) and guanine (G) pair together.