1. Functions are listed in text.
2. Cells themselves replicate, so the DNA must replicate.
3. a. - 3
b. - 4
c. - 2
d. - 1
4. Nitrogen bases
5a. A G C T C T T A G A G C T A A
b. G G C A T A T C G G C C A T G
c. T A G C C T A G C G A T G A C
6. See page 317.
7. Answers will vary.
8. A disorder of DNA repair is inherited because it deals with enzymes coded for on the DNA itself.
9. DNA polymerase makes DNA polymers. Therefore, it helps put together the DNA in the replication process. Therefore, it also helps put the DNA together when it is being repaired.
TO THINK ABOUT
1. 40 minutes. See page 320. This can easily be worked by hand.
2. Answers will vary.
3. DNA structure and function are essentially universal.
4. Answers will vary. The reasoning is the important thing here.
5. The antibody titer may be so low it cannot be detected. Amplifying the viral nucleic acid makes the quantity bigger and decreases the chance of error.
6. Deficient mismatch repair.
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