Assertion :Purine bases present in DNA are adenine and guanine. Reason: The base thymine is present in RNA while base uracil is present in DNA.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
In DNA, the two bases purine bases are adenine and guanine which form hydrogen bonds with their complementary pyrimidines derivatives i.e. thymine, and cytosine, respectively.

This is called complementary base pairing.

In RNA, the complement of adenine is uracil instead of thymine.

Hence, Assertion is correct and the reason is incorrect.

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Similar questions

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

{SiO}_{2}

{CaCO}_{3}

CaO

{CaCO}_{3}

{SiO}_{2}

H_{2}

H e

(1 + \frac{P b}{R T})

H_{2}

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{2n}^{2}

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