Origin of syndactyl
Examples from the Web for syndactylism
Lewis and Embleton (1908, p. 45) present strong arguments against the theory that syndactylism is due to arrested development.
Actually, the foot deformities described by Lewis and Embleton are inherited much like syndactylism in poultry.
So we reach the conclusion that, as in polydactylism, so in syndactylism dominance is very imperfect.
The third case of imperfection of dominance is that of syndactylism.
Syndactylism illustrates another step in the series of decreasing potency of the dominant.