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Parent-offspring correlation in an equilibrium population.

Parent-offspring correlation is of fundamental importance in the study of inheritance of metric characters in man. For many years this index was based upon pairs consisting of one parent and one child each. Li (1954) worked out a method to deal with parents and more than one offspring. The present communication generalizes Li's results for application to a general mating system which keeps the population in equilibrium satisfying Wright's equilibrium law (cited in Li 1955).