Which of the following statements about the structure of DNA is correct?

Practice question

Question

Which of the following statements about the structure of DNA is correct?

Options

Choose one · Correct answer highlighted

The two strands are parallel The bases pair through covalent bonds The two strands have antiparallel polarity Correct The sugar-phosphate backbone is on the inside

Explanation

The two strands of DNA run in opposite directions (antiparallel) with one strand in the 5' to 3' direction and the other in the 3' to 5' direction.

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