Mueller et al. created a strain of mice that lacked the receptor that normally responds to a bitter substance called Cyx. The mice that did not have this receptor _____. a. avoided all bitter substances b. avoided Cys, but would eat other bitter foods c. did not avoid Cyx d. avoided high concentrations of PTC
since the receptor that responds to the bitter substance Cyx is absent, the mice will not avoid Cyx as they are incapable of detecting the bitter taste.
