Final answer:
The shape of DNA is a double helix with a sugar-phosphate backbone and anti-parallel strands.
Step-by-step explanation:
The shape of DNA is known as a double helix. It consists of two strands that are twisted around each other in a helical structure. The strands are made up of nucleotides, which are composed of a sugar-phosphate backbone and a nitrogenous base.
The double helix structure of DNA allows for the pairing of complementary bases. The bases adenine (A) always pairs with thymine (T), and guanine (G) always pairs with cytosine (C). The strands in the double helix are anti-parallel, which means they run in opposite directions.
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