試題詳解

18.Is sequencing, does each labeled DNA molecule have a fluorescently labeled dideoxyribonucleotide end? Do the labeled nucleotides lack the 2' or 3' hydroxyI group?
(A) 3' end； 2' hydroxyl group only
(B) 3' end； 3' hydroxyl group only
(C) 5' end； 2' hydroxyl group only
(D) 5' end； 3' hydroxyl group only
(E) 3' end； both hydroxyl groups