Question

Male aggression has evolved in a lineage of bighorn sheep. In this lineage, the status of males cannot be assessed via a signal. Given that the cost of aggression is 0.5 fitness units and the benefit of the aggressive behavior is 0.2 fitness units, what is the equilibrium frequency for males to display aggressive behaviors during interactions with other males?

A. 0.3333

B. 0.4

C.0

D.0.50

E.1

Answer 1

Here in ques there is a mistake if we have to choose from option than there must be printing mistake where cost and benefit value interchange so i m giving solution one acc to ques in which no ans from option matches while second by interchanging their value acc to whivh coorect ans matches option.

For equilibrium

Genetic relatedness x benefit= cost

Genetic relatedness x0.2=0.5

Genetic relatedness=0.5/0.2=2.5

Case2: there cost value=0.2

Profit value=0.5

Genetic relatidnessx 0.5=0.2

Genetic relatedness, =0.4

Ans-b) 0.4

Please check this ques again if any mistake as i suggested above thank you