For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation:

it marks things for degradation via the proteasome. it alters there celluar location.

1) a

2)c

3)a

4)c

5)b

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