Genetic variance components and hierarchical F statistics for tree sparrows from Beijing.

A, B and C are three different grouping methods used in AMOVA; Method A treated samples from one site as a group, Method B divided all samples into urban and rural groups and Method C treated samples on the same side of a highway as a group. The subscripts of F refer to the hierarchical levels being compared; GT, groups to total population; IG, individual to group; individual to total population.