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Biology 11 Online
OpenStudy (anonymous):

Why is a marker used when running the fragments through the gel?

OpenStudy (koikkara):

A marker contains DNA fragments of known size. Markers are run in every gel for comparison with the unknown fragments in other gel lanes. restriction map: It shows where restriction enzymes cut the original piece of DNA.

OpenStudy (anonymous):

because the marker helps the DNA

OpenStudy (koikkara):

hope u got answer for next question too...

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