試題詳解

5. A scientist developed a particular chemical to bind with adenine. If this chemical were applied prior to the S phase in the cell cycle, what might be a logical prediction of the outcome?
(A) The DNA replication would proceed except that adenine would have the chemical bound to it and is incorporated into the new sister chromatids.
(B) The DNA replication would proceed except that everywhere an adenine was supposed to be, a thymine was substituted into the new developing strand.
(C) The DNA replication would proceed because cytosine and guanine would continue to form base pairs.
(D) The DNA replication would stop because if adenine was bound then thymine would not have a complement with which to base pair.