Questions
1. Imagine for a moment that sentinel behavior evolved by group selection, so meerkat groups that had sentinels
tended to have higher fitness than meerkat groups without sentinels, with sentinel dury (and its associated costs)
being shared among members of the group on an equal rotation "for the good of the group."
a. In a meerkat group with sentinels taking equal turns on duty, who is paying fewer fitness costs: the foraging
meerkats or the sentinel meerkat?