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Chapter 12: Problem 9

In DNA the nucleic acid bases form hydrogen bonds between them, which are responsible for the formation of the double-stranded helix. Arrange the bases guanine and cytosine to give the maximum number of hydrogen bonds.

Short Answer

Expert verified
Guanine (G) and Cytosine (C) will form maximum number of hydrogen bonds when arranged opposite to each other. They will form three hydrogen bonds.

Step by step solution

01

Understanding DNA Structure

Nucleic acid bases in DNA are adenine (A), thymine (T), cytosine (C) and guanine (G). In these, A forms a pair with T and G forms a pair with C. They bond with each other through hydrogen bonds. However, while A and T form two hydrogen bonds, G and C form three. This is due to their chemical structure and the presence of hydrogen bonding sites.
02

Arranging Guanine and Cytosine

To form maximum number of hydrogen bonds, arrange guanine (G) and cytosine (C) opposite to each other. They will form three hydrogen bonds in between them. Here is a simple representation for better understanding: G - C G - C G - C

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