If they are incompatible, they survive normally and grow side by side as two homokaryons.
Because the OC type encounters more compatible conspecifics than the other types, many heterokaryons will be formed but only a few (low-fitness) homokaryons with only h nuclei.
They assumed that the parasitic allele was competitively superior in heterokaryons but lowered the fitness of homokaryons.
In formulas (B2a) to (B2d), the first part of the equation to the right of the equals sign is the fraction of that genotype produced by homokaryons.
Fritsche crossed homokaryons together to make the U1 and U3 hybrids, she did so without the knowledge that they had the potential to mate.
Thousands of these homokaryons from commercial and wild sources are used in our breeding program,
Our lab has had the best luck obtaining homokaryons through spore germination.
MAS allows us to use a DNA-based marker system, to determine which of the homokaryons will provide us with the traits we desire, without having to wait for new crosses to be cropped.
This marker was integral in the development of our patented brown hybrids; where one of the steps was to cross homokaryons from a white commercial strain with homokaryons from an old-fashioned brown strain.
It was not until we crossed homokaryons from U1 with homokaryons from the Old-Fashioned Brown and created an intermediate hybrid, that we finally started to have success.