New combinations of genes may be produced by
a. independent assortment.
b. mutation.
c. crossing over.
d. sexual reproduction.
e. all of these.
Answer: e
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Identify the site indicated by the arrow in the diagram
a. complement binding site of an antibody b. antigen binding site of an antibody c. MHC binding site of an antigen d. complement binding site of T cell receptor e. MHC binding site of a T cell receptor
With __________ growth, a small population starts growing slowly, then grows rapidly, and then
levels off once __________ is reached. Fill in the blank(s) with the appropriate word(s).
Meiosis and germination of spores is indicated by
letter a. A. b. B. c. C. d. D. e. E.
Which of the following statements concerning adaptive immunity is FALSE?
A) It is always present and instantly protects against infection. B) It can be stimulated by vaccination. C) It requires specific recognition of microbes and antigens. D) It can form memory responses.