試題詳解

19. All of the following are characteristics for in vitro DNA synthesis EXCEPT:
(A) DNA polymerase adds nucleotides in a 5'→ 3' direction.
(B) The primer strand of DNA determines the nucleotides added.
(C) Correct hydrogen bonding is the primary check of the newly synthesized DNA.
(D) A primer strand must contain a free 3'-OH.
(E) DNA polymerase copies the complementary strand of DNA.