Talking Glossary of Genetic Terms

Listen to Definition

Francis S. Collins, M.D., Ph.D. defines Mutation


myoo TEY shuhn

A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses. Germ line mutations occur in the eggs and sperm and can be passed on to offspring, while somatic mutations occur in body cells and are not passed on.

How to cite this termHow to cite this term for research papers

About the Talking Glossary