The inheritance was pathological only in the case in which those involved were affected by a morbid germ, in such a way that it was enough for the parent to be affected by some inheritable illness to transmit it to their descendents even when there was no consanguine relationship at all.
La herencia era patológica solo en el caso de que los implicados estuvieran afectados de un germen morboso, de tal manera que bastaba que los individuos que engendraran estuvieran afectados de algún mal heredable para transmitirlo a su descendencia aun cuando no tuvieran relación sanguínea alguna.