In the Watson-Crick Model of DNA Structure:
A) Both Strands $\rightarrow$

question 22

Multiple Choice

In the Watson-Crick model of DNA structure:

• A) both strands run in the same direction, 3' \(\rightarrow\) 5'; they are parallel.
• B) phosphate groups project toward the middle of the helix, where they are protected from interaction with water.
• C) T can form three hydrogen bonds with either G or C in the opposite strand.
• D) the distance between the sugar backbone of the two strands is just large enough to accommodate either two purines or two pyrimidines.
• E) the distance between two adjacent bases in one strand is about 3.4 Å.

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