If the coefficient of relatedness between two individuals is 0.5, then A) altruism can evolve if c 2b. B) altruism can evolve if c

Question

If the coefficient of relatedness between two individuals is 0.5, then
A) altruism can evolve if c > 2b.
B) altruism can evolve if c < 2b.
C) altruism cannot evolve via kin selection.
D) altruism will sometimes evolve regardless of the values of c and

Quizplus · Accepted Answer

According to Hamilton's rule, altruism can evolve if the cost to the altruist (c) is less than the benefit to the recipient (b) multiplied by the coefficient of relatedness (r). Here, r = 0.5, so altruism can evolve if c < 0.5 * 2b, which simplifies to c < b.

If the Coefficient of Relatedness Between Two Individuals Is 0