Biology 3436F/G Lecture Notes - Lecture 16: Selfish Dna, Eusociality, Social Evolution

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+ selfish dna (when gene replicates selfishly at expense of genome) +/- meitic drive (when both patric genes selfishly get into next thing, and exclude matric (or vv)) + if division of labour, explains cancer. + - cooperation if no division of labour. So now you have independently replicating genomes, what brings these together to cooperate. What lead cells to come together to organism. Nothi(cid:374)g (cid:272)o(cid:373)i(cid:374)g together a(cid:271)out spite, selfish(cid:374)ess (cid:272)a(cid:374)"t e(cid:454)plai(cid:374) coming together of individuals does(cid:374)"t e(cid:454)plai(cid:374) But cooperation (egalite) and altruism (fraternite) can explain the coming together of individuals. Can genes evolve if one gene suffers fitness cost but helps another gene (altruism) If it was cooperation so that both genes were increasing individual fitness, so when they do cooperate they leave more copies of themselves than they would. I(cid:374) (cid:449)hi(cid:272)h (cid:272)ase ge(cid:374)es (cid:374)eed(cid:374)"t (cid:271)e related to ea(cid:272)hother.

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