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.

Answered by Charlotte C. Biology tutor

3912 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Explain the roles of the rough endoplasmic reticulum and the Golgi apparatus in protein trafficking and modification.


In a DNA molecule 28% of all bases found were Adenine. What are the remaining bases and their percentages in this molecule?


What is the difference between a prokaryotic and eukaryotic cell?


How does a simple reflex work?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences