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DNA double helix does not have which of the following?

a) Sugar-phosphate backbone
b) Complementary base pairing
c) Antiparallel strands
d) Single-stranded regions

1 Answer

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Final answer:

The DNA double helix does not have single-stranded regions.

Step-by-step explanation:

The correct answer is d) Single-stranded regions.

DNA double helix does not have single-stranded regions. The DNA double helix is made up of two strands that are twisted around each other in a helical structure.

These two strands are anti-parallel, meaning that the 3' end of one strand faces the 5' end of the other strand.

The sugar-phosphate backbones form the outer structure of the helix, while the nitrogenous bases (adenine, thymine, cytosine, and guanine) pair up in complementary base pairing manner.

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