Using Hamilton's rule,__________.
A)a benefit given to a full sibling must be twice the costs to the actor for altruistic decision rules to evolve
B)a benefit given to a half sibling must be twice the costs to the actor for altruistic decision rules to evolve
C)a benefit given to a first cousin must be half the costs to the actor for altruistic decision rules to evolve
D)a benefit given to a first cousin must be four times the costs to the actor for altruistic decision rules to evolve

Question

Quizplus · Accepted Answer

Hamilton's rule states that altruism is favored when the genetic relatedness (r) times the benefit to the recipient (B) is greater than the cost to the actor (C), or rB > C. For full siblings, r = 0.5, so the benefit must be twice the cost for altruism to evolve.

Using Hamilton's Rule,__________