There are ______ different alleles for blood type in humans.
A. 3
B. 4
C. 8
D. 12
Answer: A. 3
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You are a parasitologist interested in roundworms affecting wolves. If you know two populations of wolves were separated long enough ago for them to speciate, would you expect their roundworms (derived from a common ancestor) to speciate as well?
What is this process called? A. yes; allopatric speciation B. yes; co-speciation C. no; dispersal D. no; natural selection
If an individual carries a mutation that results in a complete lack of MHC class I proteins, how would the individual's immune response be affected? Select all correct choices
A. Memory cell antibodies would not be able to attach to antigen epitopes. B. Cytotoxic T cells would not be able to target (and destroy) infected cells. C. Helper T cells would not be able to interact with antigen-presenting cells. D. Plasma cell antibodies would not be able to attach to antigen epitopes.
Place the events associated with each stage of infectious disease in the correct order with regard to time._____Prodromal stage _____Incubation period _____Convalescence _____ Illness period
Fill in the blank(s) with the appropriate word(s).
Which of the following represents the best single
source of vegetable protein for humans? a. rice b. quinoa c. beans d. lentils e. tofu