Hardy Weinberg Equilibrium Flashcards
p
freq of dom allele, expressed decimal fraction
p + q = 1
q
freq of rec allele, expressed decimal fraction
p + q = 1
Allele freq. (p,q) do not evolve
given these assumptions (5)
*Mating random (i.e. no sexual selection)
*No net mutation
*No migration
*Infinite pop size (math world)
*No differential success of phenotypes
Hardy Weinberg Equilibrium
p2 + 2pq + q2 =1 (genotype)
p2 =
freq. of homozygous dom.
2pq =
freq. of heterozygous
q2 =
freq. of homozygous rec.
(p2 + 2pq)
Dominant Phenotypic Frequency
Selection
Differential survival and
reproduction of phenotypes in a
population
Natural Selection’s key factors acting
against HW Eq. (4)
*All pheno. not equal
*non-random mating
*Sexual selection
*Fecundity not random
chi squared test
(O-E)^2 / E