Two main early theories were proposed to explain how antigen-specific antibodies develop: the instructional theory and the selective theory. How did the two differ? Which was ultimately shown to be CORRECT?
What will be an ideal response?
The selective theory says that, when an antigen receptor binds with an antigen, the cell becomes activated (or the cell is selected to proliferate and secrete more copies of the receptor). The instructional theory says that the antigen receptor molds itself to the antigen. The selective theory was shown to be correct.
You might also like to view...
What is the holdup in waist-to-height ratio (WHtR) being implemented worldwide as a health risk assessment?
Exercise can reduce the risk of heart disease by all of the following EXCEPT
A) improving blood flow. B) increasing LDL levels. C) increasing heart efficiency. D) increasing the number of capillaries.
Nerve damage associated with diabetes can cause numbness and tingling in the
A) neck. B) hands. C) feet. D) hands and feet.
Factors that influence the rate of absorption of medication include:
a. national origin of client, heat, and moisture of the skin, and age of client b. sex of client, condition and location of the skin, and age of client c. condition and location of the skin, heat, and moisture of the skin d. sex of client, national origin of client, and condition of the skin