BIOLOGY 1M03 Lecture 25: Lecture 25 – Reciprocal Altruism, Human Evolution (Ch 13 + 14)
9 Mar 2017
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Lecture 25 reciprocal altruism, human evolution (ch 13 + 14) How can evolution help others: kin selection (inclusive fitness, hamilton"s rule, the animals themselves do not need to figure this out (they have a genetic predisposition, non-kin. If the fitness benefit to the recipient (is greater than) the fitness cost to the donor, both participants will gain if the help is reciprocated at a later date. When we are in a position to help that friend , we help them and they return the favour. In order for this to work, we need a few things to follow . Benefit of recipient is greater than cost to the donor. Individual recognition (being able to recognized who helped you) Cannot survive more than 3 days without feeding. They associate with kin and non-kin roost mates: they have a group that they roost with and return to it continuously. Will also regurgitate to non-kin who will regurgitate to them.
