Question

in a dna double helix, what kind of chemical bonds form between the complementary nitrogenous bases? view available hint(s) nitrogen bonds hydrogen bonds phosphodiester bonds polar covalent bonds

Explanation:

In a DNA double - helix, hydrogen bonds form between complementary nitrogenous bases. Adenine (A) pairs with Thymine (T) via two hydrogen bonds, and Guanine (G) pairs with Cytosine (C) via three hydrogen bonds. Phosphodiester bonds are between nucleotides in a single strand, and polar covalent bonds are within individual nucleotides. There is no such thing as "nitrogen bonds" in this context.

Answer:

B. Hydrogen bonds