It is known in the case of hybrid
colours that, for instance, an
amount of 'red' mixed with the
same amount of 'white' produces a
new colour: 'pink'.
Naively one could expect that the
same would happen in the
hybridization of living things. This
will happen indeed for many
phenotypic aspects, but for many
other phenotypic characteristics
this is not so. What actually
happens is that in the hybrids only
one phenotypic characteristic of
the two crossed will occur and so
the other seems to be lost.
With respect to seed colour in the
pea this exactly resulted in
Mendel's experiments.
	x		--»
P1		P2		F1
Mendel observed not only that all
F1 seeds were yellow, but also that
in this respect it did not matter
whether the yellow seed aspect
came from the father- or the
mother plant.