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Biology
Why does cytosine make pair with guanine and not with adenine?
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Q. Why does cytosine make pair with guanine and not with adenine?
Molecular Basis of Inheritance
A
Polar nature of C and A
8%
B
C—A pair would not reach across the double helix
6%
C
C—A pair would be wider than double
18%
D
Hydrogen bond forming functional groups are not complementary between C and A
67%
Solution:
Cytosine make pair with guanine and not with adenine because hydrogen bond forming functional groups are not complementary between C and A.