Evolution Model Equations Flashcards
If two alleles (B and b) were brought to a environment where nothing existed, what is the general distribution of alleles in H-W?
0.25 BB0.5 Bb0.25 bb
Hardy-Weinberg Equilibrium equation and what each variable stands for
p^2 + 2pq + q^2p+q = 1p= AApq = Aaq= aa
Method to solve H-W problems
1) Make a column-row chart of data2) with data given add up all individuals/percentages 3) find p with data given ( x (AA) + 1/2 x (Aa) / 100% or total individuals )4) 1- p = q5) with given p and q solve for HW values (p^2, 2pq, q^2) and convert to %6) if #s have changed then no equilibrium*if given individuals, multiply the resulting HW values by the total # of individuals)
Individual fitness
s x f x k (usually 1/2 ; 1 in CLONING)# offspring/ # previous generation
Relative fitness
individual(Darwinian) fitness/ max indiv, fitness
gene frequency
individual in selected gen / total in the selected gen
Relative allele fitness
You use relative fitness values (NOT individual fitness) with p and q values
Average allele fitness
p(Wa; relative allele fitness for A) + q(Wa; relative allele fitness for a)