BIO120H1 Lecture Notes - Lecture 3: Genetic Drift, Monomorphism, Gene Flow
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BIO120H1 Full Course Notes
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11:37 pm: frequency dependence: it dictates the fitness of a moprh or of an individual. For example if a rare morph arrives at a place where he is unique and where he can mate with all other morphs, then frequency dependence will cause equilibrium and maximize the fitness of that rare breed. Why are humans and most species 1:1: the ultimate explanation according to the professor is frequency dependence. This particular ratio maximizes the fitness of individuals and it ensures gene flow. If only females could mate with one another it does not favour the gene flow and the sharing of new genes that comes with having males. Therefore males are genetically important (yay: why do some organism live a lot longer than others, heterozygousity really increases fitness, a study showed that older individuals were more heterozygous. The most heterozygous individuals were considerable the oldest.
