The Two Strands of the DNA Double Helix are Held

Question

The two strands of the DNA double helix are held together by
A) 5ʹ to 3ʹ attraction.
B) hydrogen bonds between nucleotide bases.
C) codons.
D) peptide bonds between nucleotide bases.

Accepted Answer

The two strands of the DNA double helix are held together by hydrogen bonds between nucleotide bases. The four nucleotide bases (adenine, thymine, cytosine, and guanine) pair up specifically: A with T and C with G. Hydrogen bonds form between the base pairs, holding the two strands of the helix together.