Question
Question: In gel-electrophoresis, all the DNA fragments move towards the based of the gel with variable veloci...
In gel-electrophoresis, all the DNA fragments move towards the based of the gel with variable velocities because
A
DNA is positively charged
B
DNA is slightly negatively charged
C
DNA fragments have different molecular weights
D
Both (2) and (3)
Answer
Both (2) and (3)