The Role of Maternal Effects in Animal Breeding: III. Biometrical Aspects of Maternal Effects in Animals

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Abstract
This paper develops the biometrical aspects of traits having a direct and a maternal effect. Also the influence of a grand maternal effect is considered in conjunction with the direct and maternal effect. The theoretical expectations of several common covariances between relatives are derived from a general linear formulation that involves the relationships of the contributing individuals and the relevant genic variances and covariances. Copyright © 1972. American Society of Animal Science . Copyright 1972 by American Society of Animal Science.