HETEROGENEOUS SELECTION IN SUBDIVIDED POPULATIONS

The dynamics of allele frequencies changing under migration and hetero geneous selection in a subdivided population are investigated. Using p erturbation techniques, a stationary state is obtained when migration and selection are both small. Heterogeneous selection leads to a posit ive correlation between values of F-statistics and heterozygosities wh en these are compared among sets of subdivided populations. This contr asts with a negative value of the correlation obtained under Wright's classical model of homogeneous selection, and with the absence of corr elation in the completely neutral situation.