Variance Effective Size
In the Wright-Fisher idealized population model, the conditional variance of the allele frequency, given the allele frequency in the previous generation, is
Let denote the same, typically larger, variance in the actual population under consideration. The variance effective population size is defined as the size of an idealized population with the same variance. This is found by equating with and solving for which gives
Read more about this topic: Effective Population Size
Famous quotes containing the words variance, effective and/or size:
“There is an untroubled harmony in everything, a full consonance in nature; only in our illusory freedom do we feel at variance with it.”
—Fyodor Tyutchev (1803–1873)
“Watteau is no less an artist for having painted a fascia board while Sainsbury’s is no less effective a business for producing advertisements which entertain and educate instead of condescending and exploiting.”
—Stephen Bayley (b. 1951)
“Learn to shrink yourself to the size of the company you are in. Take their tone, whatever it may be, and excell in it if you can; but never pretend to give the tone. A free conversation will no more bear a dictator than a free government will.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)