Class Notes (1,100,000)
CA (620,000)
Western (60,000)
BIOL (7,000)
Lecture 6

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


Department
Biology
Course Code
BIOL 3436F/G
Professor
Graham Thompson
Lecture
6

This preview shows half of the first page. to view the full 2 pages of the document.
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
gene
-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
!
!
!
!
!
!
You're Reading a Preview

Unlock to view full version