How are DNA strands held together?
Understand the Problem
The question is asking about the structure of DNA and how the strands of DNA are connected to each other at a molecular level. It is likely referring to the bonds between the nucleotides that make up the DNA structure.
Answer
Hydrogen bonds between pairs of bases
The final answer is hydrogen bonds between pairs of bases.
Answer for screen readers
The final answer is hydrogen bonds between pairs of bases.
More Information
DNA strands form a double helix structure with adenine pairing with thymine via two hydrogen bonds and guanine pairing with cytosine via three hydrogen bonds.
Tips
A common mistake is to confuse hydrogen bonds with covalent bonds. Covalent bonds are within each strand and hydrogen bonds between the strands.
Sources
- The Structure and Function of DNA - Molecular Biology of the Cell - ncbi.nlm.nih.gov
- Interactions That Hold DNA Together - News-Medical - news-medical.net
- What kinds of bonds holds two strands of a DNA molecule together? - socratic.org
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