1. What is the source of the MATa gene, bacteria or yeast? How do you know?

2. Is RecA a gene or a protein? How do you know?

3. How do DNA polymerases involved in DNA replication maintain DNA fidelity? (list 3 ways).

4. What is the difference between a DNA-dependent DNA polymerase, a DNA-dependent RNA polymerase and an RNA-dependent DNA polymerase?

5. Uridine, pseudouridine and dihydoruridine are found in what molecules?

6. 7-methylguanosine is found in what molecule?

7. In what molecule and what part of it is there a wobble position?

8. In E. coli, what do the 3 codons AUG, GUG and UUG have in common?

9. How does an organism cope with multiple codons for the same amino acid?

10. The lesion O ⁶ -meG is a result of what kind of damage? Why is it mutagenic?