Question

the minimum number of hydrogen bonds with in one coil of DNA
1.30
2.20
3.10
4.38​

Answer 1

Answer:

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b) 3.10

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Answer 2

ANSWER :- 10

The traditional Watson-Crick base pairs in DNA may occasionally adopt a Hoogsteen conformation, with a different organization of hydrogen bonds. Previous crystal structures have shown that the Hoogsteen conformation is favored in alternating AT sequences of DNA. Here we present new data for a different sequence, d(ATTAAT)2, which is also found in the Hoogsteen conformation. Thus we demonstrate that other all-AT sequences of DNA with a different sequence may be found in the Hoogsteen conformation. We conclude that any all-AT sequence might acquire this conformation under appropriate conditions. We also compare the detailed features of DNA in either the Hoogsteen or Watson-Crick conformations.