How does gel electrophoresis help forensic scientists solve crimes?

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Gel electrophoresis is a procedure for separating a mixture of molecules through a stationary material (gel) in an electrical field. DNA fragments are separated by size as they move through the gel matrix; DNA strands are then identified. Hope this helps...good luck! Below is a great link to use a 'virtual gel electrophoresis' process - it's super! more
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