A Mathematical Theory of Natural and Artificial Selection. Part Ii the Influence of Partial Self‐fertilisation, Inbreeding, Assortative Mating, and Selective Fertilisation on the Composition of Mendelian Populations, and on Natural Selection.

Summary. Expressions (2·1), (3·1), (4·1), (5·1) are found for the composition of Mendelian populations subjected to partial self‐fertilisation, inbreeding, assortative mating, or selective fertilisation, and equations (2·2), (3·2), (4·2), (5·2) derived for the effect of selection on such populations. The effect of selection is greatly increased by inbreeding and self‐fertilisation.