Final answer:
Cooperative biases in behavior among kin can be seen in various animal species, including humans and social insects. This behavior is a result of kin selection and inclusive fitness, where individuals benefit by increasing their own fitness and the fitness of their closely related relatives.
Step-by-step explanation:
Cooperative biases in behavior among kin can be seen in various animal species, including humans and social insects. This behavior is a result of kin selection, where individuals are more likely to display cooperative behaviors towards closely related individuals. For example, social insects like bees and ants exhibit cooperative behavior when taking care of the queen, as they are closely related to her and indirectly pass on their genes through her offspring.
One explanation for this behavior is the concept of inclusive fitness, where individuals not only increase their own fitness but also the fitness of their relatives who share genes with them. While these behaviors may seem altruistic, they ultimately benefit the individual displaying them. This cooperative bias can be observed in humans as well, as we tend to align ourselves with groups of kin, reinforcing allegiances among in-group members and increasing animosity towards out-group members.