Data from a number of studies indicate that primates are more likely to behave altruistically toward

Data from a number of studies indicate that primates are more likely to behave altruistically toward kin than toward nonkin. However, many of the same studies show that rates of aggression toward kin and nonkin are basically the same. How does this fit with what you have learned about kin selection? Why are monkeys as likely to fight with kin as with nonkin?