Symbols and Maths necessary to know Flashcards
What is the symbol for narrow sense heritability?
h2
What is the symbol for the rate of mutant substituation per year during evolution?
k
What is the symbol for the allele frequences for a di-allelic locus?
p, q
What is the symbol for allelic frequencies in generations 0 and t?
p0, pt
What is the symbol for equilibrium allele frequencies
pat (hat), q (hat)
What is the symbol for the response to selection
R
What is the equation for Response to selection (R)
narrow sense heritability (h2) x selective differential (s)
What is the symbol for selection coefficient
s, si
What is the symbol for selection differential
s
What is the symbol for the additive component of genetic variance
VA
What is the symbol for the dominance component of genetic variance
VD
What is the symbol for the environmental component of phenotypic variance
VE
What is the symbol for genetic component of phenotypic variance
VG
What is the symbol for epistatic component of genetic variance
VI
What is the symbol for the total phenotypic variance
VP
What is the symbol for the relative fitness of the ith genotype (usually relative to the fittest genotype)
Wi
What is the symbol for the mean fitness
w bar
What is the symbol for the change in the allele frequency between generations
Δq
What is the symbol for the forward mutation rate per generation
µ
What is the symbol for backward mutation rate per generation
ν
What are the Hardy - Weinberg expected genotype frequencies?
p2 : 2pq : q2
What is the breeders’ equation from selection experiments?
breeders’ equation: R = h2s
What is the equilibrium allele frequency under heterozygote advantage?
q = s/(s+t) where s and t are the selection coefficients for the two homozygotes
What different selection models are present when worling out the fitness of a genotype?
directional, frequency dependent, heterozygote advantage
What is the equilibrium freuqnces for very rare disadvantageous alleles when they are dominant?
q = μ/s (dominant)
What is the equilibrium freuqnces for very rare disadvantageous alleles when they are recessive?
q = √(μ/s) (recessive).
