During DNA Sequencing,a Laser Beam Scans the Fragments on the Electrophoresis

Multiple Choice

During DNA sequencing,a laser beam scans the fragments on the electrophoresis gel to identify the ____________________.

A) gene sequence by the color it fluoresces
B) end nucleotide by the color it fluoresces
C) useful DNA strands that will be analyzed further
D) gene products that have been fixed by the gel
E) gene products that have been sorted by the addition of a probe