HomeEducational ResourcesOnline Education Kit: Understanding the Human Genome ProjectOnline Education Kit: How to Sequence a Human Genome Online Education Kit: Reading the Sequencing Products: Transcript

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Reading the Sequencing Products: Transcript

As each DNA fragment reaches the end of the gel, a laser excites its fluorescent dye. A camera detects the color of the emitted light and passes that information to a computer. One by one, the machine records the colors of the DNA fragments that pass through the gel.

A single sequencing reaction can reveal the order of several hundred DNA bases.

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Last Reviewed: April 17, 2009