Question 1
Some bacteriophages can be either lytic or lysogenic. These are called ________ phages.
◦ temperate
◦ *
Question 2
An interrupted mating study is carried out on the Hfr strains 1, 2, and 3. A small sample of each mixture is collected every minute for 20 minutes after conjugation is established. Results for each of the three Hfr strains are shown below. The total duration of conjugation (in minutes) is given for each transferred gene.
| Hfr strain 1 | oriT | red | blu | grn | ylw |
| Duration (min) | 0 | 3 | 10 | 16 | 19 |
Hfr strain 2 |
oriT |
red |
cyn |
org |
vlt |
| Duration (min) | 0 | 2 | 6 | 11 | 20 |
Hfr strain 3 |
oriT |
ylw |
ind |
mrn |
vlt |
| Duration (min) | 0 | 1 | 8 | 12 | 14 |
What are the interrupted mating results you would expect for a new Hfr strain if after 20 minutes of conjugation the genes transferred in the following order: oriT ind ylw grn blu and the first gene, ind, appeared after 2 minutes.
Palade's use of the pulse-chase method to study protein secretion
Small Munsterländer
Villi in the small intestine
Sample Program for Changing Daily Caloric Intake (cont.)
Sample equipment maintenance log.
A sample flow sheet.