2.7 and 7.1 Work to be Done after the Genetics Test on Friday 3/6

1. (Starting in 2.7) What does it mean to say the DNA replication is semi-conservative?
2. Read the section on the Meselson-Stahl experiment, describe the evidence, and explain what it means.
3. Do the DBQ on pp 113-114
4. What does helicase do?
5. What does DNA polymerase do?
6. (Moving to 7.1)  What were Hershey and Chase trying to determine in their experiment?
7. Outline the Hershey-Chase experiment, including the results.
8. What is a nucleosome and what is its role in DNA packing?
9. Do the DBQ on p. 349 (this one is tricky, but I will give some background on it in class)
10. Outline the process of DNA replication.  You may draw a diagram.  (We will go over this in class).
11. What direction does DNA replication go and why is it limited in this way?
12. What are some of the functions of non-coding DNA?