Exam 10: Social Behaviors

Why would an individual in a social group of a diploid species help to rear the young of its siblings rather than reproducing itself? Describe the expected relative importance of direct and indirect fitness benefits and explain your answer.

Wild turkeys (Meleagris gallopavo) perform mating displays at leks alone or in coalitions of related males. In the coalitions, only dominant males copulate with females. Why do nondominant males join coalitions?

Which is not true about territoriality? Territoriality develops

In the social interaction of altruism, the donor receives a(n) _____ in fitness and the recipient receives a(n) _____ in fitness.

If individuals in groups must compete with other group members for food, why would an individual be found in a group?

Which of the following is NOT a cost of living in groups?

You are studying flocks of European starlings (Sturnus vulgaris). You notice that flock size varies quite a bit from just a few individuals to hundreds within the same flock. What might you expect when observing starling feeding behavior in open fields and lawns between individuals in the small flocks and those in the large flocks?