Question

How many hydrogen bonds are there between guanine and cytosine?

Answer 1

Answer:

Three hydrogen bonds

Explanation:

Qualitativelty, G (guanine) and C (cytosine) undergo a specific hydrogen bonding, whereas A (adenine) bonds specifically with T (thymine, in DNA) or U (uracil, in RNA). Quantitatively, the GC pair is bound by three hydrogen bonds, while AT and AU pairs are bound by two hydrogen bonds.

Answer 2

Answer:

Three Bonds

Explanation:

In molecular biology and genetics, GC-content (or guanine-cytosine content) is the percentage of nitrogenous bases on a DNA or RNA molecule that are either guanine or cytosine (from a possibility of four different ones, also including adenine and thymine in DNA and adenine and uracil in RNA).[1] This may refer to a certain fragment of DNA or RNA, or that of the whole genome. When it refers to a fragment of the genetic material, it may denote the GC-content of section of a gene (domain), single gene, group of genes (or gene clusters), or even a non-coding region.

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