It's not guaranteed the race of the donor is the same as the father, but it's most often going to be the case. The discordant eye colour is not as conclusive as

It's not guaranteed the race of the donor is the same as the father, but it's most often going to be the case. The discordant eye colour is not as conclusive as some people think, though. In one study, about 10% of the children of blue eyed parents had brown eyes. The genetics of eye colour isn't as simple as most people think it is. Of course, if you convince your parents to submit to a DNA test, then sure, the jig is up. In my day job, I'm a geneticist, and have worked on population genetic typing. There is a fair amount of heterogeneity in any population, so it wouldn't surpise me to see unusual patterns in the data. There's also the fact that consumer DNA tests oversell the granularity that can be gleaned about ancestry.