You have a population of harmful bacteria that is making you feel awful and your doctor recommends you take antibiotics for 10 days, one tablet per day. From your learning about natural selection you know that there is
variation within populations. Individuals from the harmful bacteria population that are making you sick are not
all the same with respect to antibiotic tolerance. Some individuals when exposed to antibiotic will die quickly:
some will need a higher dose to be killed. As you take more antibiotics the dose increases killing those tough
ones also. By the end of the treatment you hope all of the individuals of the harmful bacteria population are
dead. You are now free of infection and feel great again (see figure).
Let's say that on day 4 of your treatment, when you are feeling much better you decide to stop the treatment. why do you think this is not a good idea?