You are reading a scientific article about cheetahs that have stripes instead of spots. the article refers to this as a genetic mutation. this has no impact on the cheetahs' fitness, which illustrates what about mutations?

Around the third week of a college class, a professor decides she’s had enough, is tired of dealing with bureaucracies, and wants out. so one day, instead of coming to class, she flies to tahiti and sells souvenirs on the beach. if this happened, the college would simply assign a substitute to finish the course. what does this tell you about the nature of the authority wielded by a professor?