Alessandro wanted to help the victims of the recent earthquake in Italy. He anonymously established a fund to help the families of the victims. Even inside the banks no one knew who had done this. Alessandro did this without any desire for external or internal rewards. This is an example of
Research by Nancy Segal (2000) supports the concept of inclusive fitness in studies showing that_________________ are more alike in their helping patterns and are more likely to aid each other than are_________________ .
Helping behavior appears on the surface to be at odds with evolution: helping someone else, such as giving food, might endanger one's own survival. Which of the following statements best clarifies this issue?