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Lecture 6

Biology 3436F/G Lecture Notes - Lecture 6: Lol, Inclusive Fitness, Statistical Hypothesis Testing

Course Code
BIOL 3436F/G
Graham Thompson

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bio 3436 oct 7
for altruism to evolve, recipient of help must be related to the person in order to evolve ---> actor
is I and recipient is J
-relatedness just assumes that there is a good probability that you will have the altruistic
-if r is 0 then there is no indirect fitness possibility... if r is high, then the probability of r
evolving altruism becomes better
-explains what darwin coudlnt
makes genes important
gene for altruism could exist
speaks to our topic about levels of selection
-group level selection isn't logically sound, but you can still argue if its the individual level
or the gene level that is more important
-individual level selection is just what is good for the individual, this works for most
things, but doesnt explain it all
-altruism cannot be explained with individual level selection b/c/ the altruistic
individual has no reproductive fitness
---> so it must be gene level selection
altruism maximizes fitness of the gene, NOT the individual
use human's behaviour in a game to infer things about human altruism and evolution ... but right
now it is in its infancy
the interdepdendcy is selected for in bees, they depend on each other (not indivdualistic like
other species)
once independently replicating units come together and can only replicate as a whole
i.e. genes in a genome, those genes cannot replicate until the whole cell can reporudce
proportion of genes compared to yours, altruism is worth it if you are able to increase your
overall indirect fitness
the impact of inclusive fitness theory
-shift level of selection from individual to gene
-rise to the gene of natural selection
-offer solution to describe altruism
-hamilton's idea was initially ignored
-selfish gene theory, inclusive fitness theory, kin selection theory
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