In the ABO blood type system the alleles IA, IB, and i produce Select one:
a. one phenotype.
b. two phenotypes.
c. three phenotypes.
d. four phenotypes.
e. type A and type B blood types only.
d. four phenotypes.
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_______________ Indicate whether the statement is true or false.
Which of the following is not involved in body temperature homeostasis?
A. the hypothalamus B. secretion by sweat glands C. shivering D. constriction or dilation of blood vessels E. respiration rate
Compared to antibiotics, there are fewer antiviral agents available because ________.
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