SSC MTS EXAM

SSC

BIOLOGY

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Which of the following is a base that is NOT contained in DNA?

A	Adenine
B	Thymine
C	Uracil
D	Guanine

Explanation:

Detailed explanation-1: -Uracil is not found in DNA as it uracil has more base pair affinity to adenine, guanine and cytosine. Instead thymine is present in DNA.

Detailed explanation-2: -Final answer: Uracil is not found in DNA.

Detailed explanation-3: -The uracil is a nitrogen base of pyrimidine. The uracil present in RNA(ribonucleic acid) bonds with a double hydrogen bond with Adenine while absent in DNA(Deoxyribonucleic acid).

Detailed explanation-4: -DNA uses thymine instead of uracil because thymine has greater resistance to photochemical mutation, making the genetic message more stable.

There is 1 question to complete.