A project is underway to develop a vaccine against mouse hepatitis virus, a pathogen of mice. The vaccine consists of capsid protein of the virus, which is injected subcutaneously as a depot in alum on day 0. At days 5 and 14, the group of six mice is bled and […]

Q. A eukaryotic gene has “sticky ends” produced by the restriction endonuclease EcoRI. The gene is additional to a mixture containing EcoRI and bacterial plasmid that carries two genes conferring resistance to ampicillin and tetracycline. The plasmid has one recognition site for EcoRI located in the tetracycline resistance gene. This […]

Q. Two genes organize in corn snakes as follows: O-B is brown snakes, O-bb are orange, oo bb are albino. An orange snake was mated to a black snake, and a large number of F1 progeny were obtained, all of which were brown. When the F1 snakes were mated to […]

Task 1: Understand the basic structure and function of the cell A Biologist is examining the epiuthelial cells of the intestine under the microscope. a. Describe at least six organelles that he is likely to see in the cells and explain their functions. b. As part of your practical class […]