Fst {Malmig} | R Documentation |
Calculates the Fst from a conditional kinship matrix.
Fst(rval, N)
rval |
is a conditional kinship matrix, normally obtained by the function 'R' in the Malecot library. |
N |
the vector of effective populations size, nominally obtained by dividing the total population size by three |
The use of the Fst function follows Harpending and Jenkins 1974, and Jorde 1982. It gives an estimate of Wright's Fst, which is a measure of between-subdivision genetic heterogeneity.
Fst returns one numeric value.
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Federico C. F. Calboli f.calboli@ucl.ac.uk
Harpending, H. C. and T. jenkins. 1974. !Kung population structure. In: J. F. Crow and C. F. Denniston (eds.), Genetic distance, pp 137-161. Plenum Press, NY.
Jorde, L. B. 1982. The genetic structure of the Utah mormons: migration analysis. Human Biology 54(3): 583-597.
# Swedlund data again... data(P); data(S); data(N) # starting with how many cycles to equilibrium x<-Mal.eq(S,P,N) # calculation of phi phi<-Phi(S,P,N,x) # calcutaion of the conditional kinship matrix cond<-R(phi,N) # finally! we get the Fst value fst<-Fst(cond,N) fst