gene

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The basic unit of a cell that passes on the traits of parents to their children through the egg and sperm. Genes are pieces of DNA. They have information for making specific proteins that control specific traits or activities. Examples of traits controlled by genes are eye color, foot size, and height. Examples of activity include the growth and repair of cells.

Audio contributed by: Erin Brockovich

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Comcast Pink Ribbon Campaign

An original video-on-demand educational initiative brought to you by Breastcancer.org and Comcast. Visit www.comcast.net/pinkribbon each week through the end of October for engaging, up-to-date videos and information about the fight to end breast cancer.