Altruistic behavior is more likely
A) among kin than among nonkin.
B) among nonkin than among kin.
C) among kin than among nonkin, but only when kin and nonkin have the opportunity to interact.
D) among nonkin than among kin, but only when nonkin interact with each other more than kin do.

Question

Quizplus · Accepted Answer

Altruistic behavior is more likely among kin than among nonkin because kin share a greater amount of genetic material with each other than with nonkin. This genetic relatedness increases the likelihood that a gene for altruistic behavior will be passed down through generations, making altruistic behavior toward kin more evolutionarily advantageous.

Altruistic Behavior Is More Likely