Page "Race and genetics" Paragraph 41

Neil Risch ( 2005 ), who was involved in the research published in the article Genetic Structure, Self-Identified Race / Ethnicity, and Confounding in Case-Control Association Studies, noted: " In a recent study, when we looked at the correlation between genetic structure on microsatellite markers versus self-description, we found 99. 9 % concordance between the two.

We actually had a higher discordance rate between self-reported sex and markers on the X chromosome!

So you could argue that sex is also a problematic category.