Unformatted text preview: A allele pairs with itself (the A allele) resulting in fitness w AA plus the frequency with which the A allele pairs with the a allele resulting in fitness w Aa relative to (i.e., divided by) the average fitness in the population (wbar). This is a very nice formula since the ratio w A /wbar determines whether p will increase or decrease in the next generation. Fitness (selective) values of genotypes are a similar thing since they average the interaction effects of the AA genotype over all other genotypes at all other loci in the genome for a given environment: average fitness of AA when coupled with the B locus: (w AA = p 2 w AABB + 2pqw AABb + q 2 w AAbb ) assuming p=f(B) and q=f(b). Note: selection will continue until: w A = wbar (i.e., the ratio is = 1.0 and p' = p(1), no change). Thus average fitness in the population will be maximal but this does not mean the fitness of the population is maximal....
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This note was uploaded on 11/05/2011 for the course BIOLOGY MCB2010 taught by Professor Jessicadigirolamo during the Fall '10 term at Broward College.
- Fall '10