LIFESCI 15 Lecture Notes - Lecture 10: Ground Squirrel, Kin Recognition, Allele
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Q: why do we see so much kindness in the world? (and could we engineer a bit more cooperation when needed?) (cid:862)co(cid:373)plete theo(cid:396)(cid:455) of ki(cid:374)d(cid:374)ess(cid:863: 1. There are two ways an allele can increase its market share: direct fitness increase the number of offspring production). Indirect fitness increase the number of offspring my kin have; they also carry many shared alleles: this is why we see acts of kindness to our kin and close relatives. Inclusive fitness = direct fitness + indirect fitness. Beldi(cid:374)g"s g(cid:396)ou(cid:374)d (cid:395)ui(cid:396)(cid:396)els yells when a predator approaches (sometimes). 10% of predator attacks end with a dead squirrel. 50% of the dead squirrels were the ones (cid:455)elli(cid:374)g. male s(cid:395)ui(cid:396)(cid:396)els (cid:396)elocate to a diffe(cid:396)e(cid:374)t co(cid:373)(cid:373)u(cid:374)it(cid:455) at (cid:373)atu(cid:396)it(cid:455), fe(cid:373)ales do(cid:374)"t. Adult female squirrels are making the alarm calls. The more kin a squirrel is likely to have nearby, the more it will act (cid:862)altruisti(cid:272)ally(cid:863) (it is helpi(cid:374)g the squirrel in a genetic perspective).
