The Two DNA Chains in a Double Helix ______

question 45

Multiple Choice

The two DNA chains in a double helix ______ .

• A)have an overall diameter of 2 µm
• B)have identical base sequences
• C)are held together due to the charges of their phosphate groups
• D)wind around each other in such a way that purines are always opposite pyrimidines and vice versa
• E)are parallel to each other in 5' to 3' directionality

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