Bezüglich jener Hybriden, deren Nachkommen veränderlich sind, dürfte man vielleicht annehmen, dass zwischen den differirenden Elementen der Keim- und Pollenzelle wohl insofern eine Vermittlung stattfindet, dass noch die Bildung einer Zelle als Grundlage der Hybride möglich wird, dass jedoch die Ausgleichung der widerstrebenden Elemente nur eine vorübergehende sei und nicht über das Leben der Hybridpflanze hinausreiche.
With regard to those hybrids whose progeny are variable, one might perhaps assume that between the differing elements of the germ and pollen cell a mediation presumably occurs as well in so far as the formation of a cell serving as the foundation of the hybrid still becomes possible; yet that the compromise between the opposing elements is only a transient one and does not extend beyond the life of the hybrid plant.
variable = veränderlich See p. 36, s. 8.
differing = differirend See p. 5, s. 5.
elements = Elementen See p. 41, s. 6.
mediation = Vermittlung See p. 41, s. 9.
opposing = widerstrebend Bateson has “conflicting”, Sherwood “antagonistic”. Widerstreben means to actively resist the wish or will of someone else. Independently of the exact reading, it is clear that Mendel uses language here that imputes vitality to the “elements” or “factors” in the cell.
occurs = stattfindet … wird Just like the following clause, this clause as well should be in the subjunctive (stattfinde … werde).