How does the structure of DNA make it an effective carrier of genetic information?

DNA is a very long molecule (one cell contains about 2 metres of DNA!), meaning its coiled structure around proteins called histones allows it to fit into the small space of the nucleus. It also has a double helix structure, making it very stable, and the sugar-phosphate backbone protects the nitrogenous bases from damage (which could lead to mutation). Finally, each nucleotide is paired with a specific other: adenine - thymine, cytosine - guanine, which enables DNA to replicate itself easily and accurately, using the semi-conservative method.

CC
Answered by Charlotte C. Biology tutor

4225 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Why could a single base mutation stop an enzyme from catalysing a reaction?


Describe the process of osmosis


Describe the molecular structure of starch.


Describe how the alveoli are adapted for gas exchange


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning