Question

what is the shape of dna?

Explanation:

DNA is a double - helix structure. This was discovered by Watson and Crick. The double - helix consists of two strands of nucleotides that are twisted around each other. The nucleotides are connected by hydrogen bonds between complementary base pairs (adenine - thymine and cytosine - guanine).

Answer:

The shape of DNA is a double - helix.