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4 Written questions

3 Multiple choice questions

  1. The insertion of an incorrect nitrogenous base during DNA replication that is not detected and corrected.
  2. The sequence, or order, in which the nitrogenous bases adenine (A), cytosine (C), guanine (G), and thymine (T) are arranged in a gene or a DNA fragment, or in an organism's genome.
  3. The key enzyme that cells use to replicate their DNA. In DNA technology, DNA polymerase is used in the polymerase chain reaction to make many copies of a gene or other DNA sequence.

3 True/False questions

  1. double helixA three-step process in which damage to DNA is repaired. Damaged DNA is first recognizedthen removed, and then replaced with newly synthesized DNA.

          

  2. mutagenA substance or energy source that alters DNA.

          

  3. DNA repairA three-step process in which damage to DNA is repaired. Damaged DNA is first recognizedthen removed, and then replaced with newly synthesized DNA.