David E. Ross said:

However, they are indeed hybrid plums, different from their wild
ancestors. The effect is the same. The development of seeds and fruit
is dictated by the characteristics of the plant on which the seeds and
fruit develop, not on the genotype of the seed "germ" (the part that
forms a new plant when the seed sprouts).

In the case of a plum, the edible part which surrounds the seed is
generated by the parent plant, and will have the properties of the
parent plant.

In the case of sweet corn, you are eating the seed derived from
pollination. It is wholly derived from the product of pollination,
germ and embryo.

The genes responsible for it being sweet (as opposed to starchy)
and white (as opposed to yellow) are recessive.

It's ok if SU (sugary) strains cross with SE (sugary enhanced) strains,
but cross pollinating either with field corn varieties will result in a loss
of sweetness.

Crossing any other type of corn (even other types of sweet corn) with
an sh2 (shrunken) type can give you corn that is tough and starchy.

Yellow color is dominant over white, so a white corn variety that is
pollinated by a yellow variety will turn yellow. And thus your Silver
Queen may end up specked with gold if it crosses with a yellow
corn. Bicolor types have genes for both white and yellow, so express
a mixture and will also speckle your white variety with some yellow.
And bicolors that cross with yellow varieties will be predominantly
yellow. (Since I'm assuming you haven't emasculated your white or
bicolor corn, they will still manage to produce some white kernels.)

So, going back to the original question, it's ok to plant bicolor and
white sweet corn in the same garden (as long as they are either both
sh2 types, or both su or se types), as long as you don't insist your
white corn be pure white.
--
Pat in Plymouth MI ('someplace.net' is comcast)

After enlightenment, the laundry.