Migration of DNA During Electrophoresis Is Based

Multiple Choice

Migration of DNA during electrophoresis is based

A) mostly on the size of the molecule, since the ratio of charge to mass is approximately the same, no matter how large the DNA is.
B) mostly on the charge of the molecule, since the ratio of charge to mass is approximately the same, no matter how large the DNA is.
C) mostly on the charge-to-mass ratio since this can vary greatly among pieces of DNA.
D) on parameters not understood well.