Author: Nathan Lampson
This lesson will explain how cancer is caused by a gene mutation.
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Cancer is a disease caused by cells with genetic errors that divide without control. 

When the DNA in a cell becomes damaged it is called a Gene Mutation.


Gene Mutations (a change in a persons DNA sequence)  that cause cancer can either be inherited or caused by environmental factors.


Mutagens are environmental agents that damage DNA.

Smoking and X-ray exposure are causes of gene mutation.


Cells with damaged DNA have a higher likelihood of increasing a person's risk for developing cancer.