Question

Which description best explains Watson and Crick's DNA model?

A.

DNA is a single–stranded molecule that has nitrogenous bases toward its exterior.

B.

DNA is a double helix made of two strands linked together with hydrogen bonds.

C.

DNA is a double helix that contains nitrogenous bases toward its exterior

Answer 1

Answer: B.

Step-by-step explanation:

double helix and linked with hydrogen bonds