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DNA LADDER. - PowerPoint PPT Presentation
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DNA LADDER
• A molecular-weight size marker, also referred to as a protein ladder, DNA ladder, or RNA ladder, is a set of standardsthat are used to identify the approximate size of a molecule run on a gel during electrophoresis, using the principle thatmolecular weight is inversely proportional to migration rate through a gel matrix.
Dr.amina el shaibany