Based on the results of studies of male widowbird tail length and mating success, what would you predict would happen to male widowbirds over many generations in the absence of constraints on tail length?
A) Male average tail lengths would increase.
B) Male average tail lengths would decrease.
C) Male average tail lengths would stay the same.
D) Male tails would become more brightly colored to attract females.

Question

Quizplus · Accepted Answer

In the absence of constraints, natural selection would favor longer tails if they are associated with higher mating success, leading to an increase in average tail length over generations.

Based on the Results of Studies of Male Widowbird Tail