When performing automated DNA sequencing, all four sequencing reactions can be analyzed together in the capillary gel because:
A. each ddNTP has a different fluorescent tag.
B. each dNTP absorbs light at a different wavelength.
C. each primer is labeled with a different radioisotope.
D. the four reactions are carried out separately and then run together in the capillary gel.
E. each dNTP is labeled with a different fluorescent tag.
A
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