Out of the following, two pyrimidines in a DNA are

Cytosine and thymine

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Cytosine and guanine

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Adenine and cytosine

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Adenine and guanine

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Solution

The correct option is A Cytosine and thymine
Purines and pyrimidines are nitrogenous bases that make up the two different kinds of nucleotide bases in DNA and RNA. The two-carbon nitrogen ring bases (adenine and guanine) are purines, while the one-carbon nitrogen ring bases (thymine and cytosine) are pyrimidines.
Thus, the correct answer is option A.

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Similar questions

Statement 1: The four nitrogen bases in a DNA molecule are guanine, thymine adenine, cytosine.

Statement 2: Where adenine and thymine are purines and guanine and cytosine are pyrimidines.

Adenine and guanine are pyrimidines.

\begin{matrix} C o l u m n - I & C o l u m n - I I p . S u g a r i n D N A & i . A d e n i n e, G u a n i n e q . P u r i n e s & i i . R i b o s e r . S u g a r i n R N A & i i i . D e o x y r i b o s e s . P y r i m i d i n e s & i v . C y t o s i n e, T h y m i n e, U r a c i l \end{matrix}

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