The problem with gender classification in sport is that gender, like race, is a social construct.

The problem with gender classification in sport is that gender, like race, is a social construct. As such there is neither an exact scientific definition nor test. 

There is no way DNA is or can be linked to anyone 'classified' (stereotyped) according to the controversial and purely hypothetical Race Theory. Yes, ancestry can be traced using mitochondrial DNA (mDNA) but that only determines the matriarchal line of heredity. You could have more genes in common with someone overseas 'from another race' than somebody in your own country 'of the same race'! 

Social constructs are ideologies invented by humans that don't have any strict scientific basis. They're just concepts, or boxes to put people in. 

Prior to the discovery of gene mapping, anthropologists classified 'races' using biological characteristics like skin colour, stature, size and shape of the skull, facial characteristics etc., much in the same way they classed 'gender' by genitalia. With the advances in DNA analysis, chromosomes and genetics, scientists discovered that there is so much variation between social constructs, be they gender or race, that they couldn't pin down anything to a definitive category. 

This causes problems in competitive sport with intersex sportspeople because of the restrictions of Men not being allowed to compete in Women's competitions and of 'gender' being an unverifiable social construct. In the past, the International Olympic Committee (IOC) have tried and abandoned various tests such as buccal smear for sex chromatin, then DNA tests for the presence of Y-chromosomes, now the ever-changing testosterone level criteria. At one stage the IOC even made some women athletes parade nude in front of the judges! 

A possible solution would be to create a third category for Intersex competition. The Men's comp would be open to all genders; Women's comp would be restricted to women only (although no-one is currently certain of by which criteria this is determined as no test is yet to be verified 100% accurate) and Men would be barred from both Intersex and, as normal now, Women's competition.

There is obviously one really simple solution… abandon all divisions and make competition open, a level playing field for everyone (I couldn't resist the pun). Of course women will complain and say that isn't fair as the men have a physical advantage. And so we're back where we started…

And still no definition and therefore no solution.