DNA restriction fragments are separated by: (A) Paper chromatography, (B) Agarose gel electrophoresis, (C) Thin-layer chromatography, (D) Ultracentrifugation
Answer is B. Typically, a DNA molecule is digested with restriction enzymes, and the agarose gel electrophoresis is used as a diagnostic tool to visualize the fragments. An electric current is used to move the DNA molecules across an agarose gel, which is a polysaccharide matrix that functions as a so of sieve. Ref-D.M.Vasudevan 7/e p479