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
Related Biology A Level answers
All answers ▸GCSE - By which two processes does glucose enter cells in the human body?
What are the roles of the parasympathetic and sympathetic nervous systems?
Why do myelinated axons propagate action potentials faster than unmyelinated axons?
Describe the sequence of events that lead to the generation of an action potential