Question

question 20
0.5 pts
which functional group in dna causes the restriction fragments to move away from the origin (well) toward the positive end of the gel?
○ phosphate group
○ carboxyl group
○ hydroxyl group
○ aldehyde group

Explanation:

Gel electrophoresis separates DNA fragments based on charge. DNA has a negative charge due to phosphate groups in its backbone. Negative charges move toward the positive end of the gel.

Answer:

phosphate group