Q: What is formed when two dna strands link together in an antiparallel direction and are twisted?


Read this paragraph and choose the correct option from the provided answers:

Two DNA strands link together in an antiparallel direction and are twisted to form a double helix. The nitrogenous bases face the inside of the helix. Guanine is always opposite cytosine, and adenine is always opposite thymine.

 Choices:

- guanine

- anti-helix

- RNA

- double helix


A:
double helix