Note 1593 — XVI HEREDITY IN MAN

The ‘Ancestral Law of Heredity’, which attributes on the average half the germinal constitution to the parents, a quarter to the grandparents, an eighth to the great-grandparents, and so on, is not incompatible with Mendelian inheritance as a general statistical result. The conception of the nature of inheritance involved in this theory is, however, incompatible with the Mendelian conception of unit-characters, which conception, it may be said, is the only one which fits the facts.