Which Is an Incorrect Statement Concerning the DNA Double Helix

question 2

Multiple Choice

Which is an incorrect statement concerning the DNA double helix?

• A)The sugar-phosphate backbone is on the outside of the helix and the base pairs are on the inside.
• B)The two strands are identical but proceed in opposite directions.
• C)Hydrogen bonding holds together the two strands.
• D)Only purine-pyrimidine base pairs can be accommodated.
• E)The sugar-phosphate backbone is completely regular.

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