Seemingly altruistic behavior: selfish genes or cooperative organisms?

A largely unrecognized agency problem is embedded in Dawkins’s selfish gene theory, which treats an organism as an agent of its genes; the economic view of this problem is brought to bear on the theory and is used to offer an explanation of the correlation between altruistic behavior and biological closeness of interacting organisms that differs from that given by selfish gene theory. The essay also discusses differences between empirical implications of selfish gene theory and those of a reciprocity theory of seemingly altruistic behavior.