OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the complementary base pair to Cytosine in DNA?
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Cytosine
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Guanine
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Thymine
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Uracil
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Explanation:
Detailed explanation-1: -The two strands are held together by hydrogen bonds between pairs of bases: adenine pairs with thymine, and cytosine pairs with guanine.
Detailed explanation-2: -In DNA the complementary bases are adenine and thymine; guanine and cytosine.
Detailed explanation-3: -In both DNA and RNA, cytosine pairs with guanine (C = G) by forming three hydrogen bonds. Since adenine and thymine only have two hydrogen bonds, C-G base pairs are slightly more strongly attached than A-T or A-U base pairs. Guanine is complementary to cytosine.
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