Multiple Choice
What is the independent variable in figure 4.24?
A) The number of defective copies of the CFTR gene in humans
B) The number of defective copies of the CFTR gene in mice
C) The amount of fluid in the intestines
D) Whether or not the subjects were exposed to cholera toxin
E) Whether or not the subjects were exposed to Vibrio cholera bacteria.
Correct Answer:

Verified
Correct Answer:
Verified
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