The fitness gained by an individual’s reproduction + the reproduction of
relatives.
Define
“kin selection”
There is selection to
help relatives who share genes.
Explain altruistic behaviors as a consequence of kin selection.
Altruism: confers a benefit B to someone at a cost
C. The degree of relatedness is r. Br
> C for an altruistic behavior to evolve
Examples:
Florida scrub jays
alarm calling in
Belding's ground squirrels
Explain eusociality in hymenopterans as a consequence of kin selection
Females are more
related to their sisters than to their mother!
They can gain more fitness by rearing sisters than daughters.
Describe the concept of “reciprocal altruism”
Selection
can favor individuals who are altruistic as long as equally valuable favors are
returned by beneficiaries.