most common form of DNA helix Select the phrases that accurately describe proper
ID: 792365 • Letter: M
Question
most common form of DNA helix
Select the phrases that accurately describe properties of the most common form of the DNA double helix. There is more than one correct answer. Select all that apply. A helical turn consists of about 3.4 nucleotides. The phosphodiester bonds between nucleotide residues run in opposite directions in the two strands. Base pairs have a spacing of 3.4 A. DNA contains equal amounts of adenine and thymine, and equal amounts of cytosine and guanine. The nitrogenous bases are exposed to the solvent, whereas the sugar-phosphate backbone of each nucleotide strand is on the interior of the double helix.Explanation / Answer
The correct answers are:
DNA contains equal amounts of adenine and thymine, and equal amounts of cytosine and guanine.
The phosphodiester bonds between nucleotide residues run in opposite directions in the two strands.
Base pairs have a spacing of 3.4
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