You Freepers need to remember that race is a social and political concept, not a biological one!
The author is correct. Race is a social construct. It is not biological.
DNA reveals where some of our ancestors lived, e.g. specific continents. It does not reveal our national identity, or native language, or ethnic features generally.
DNA identifies sex. Sex is biological. The concept of gender is a little different. Gender is really a linguistic tool. But it has been applied to behavior associated with male or female identification. For example, culturally we associate dresses with females. (And kilts may seem odd from outside a culture where they are seen as appropriately masculine.) There is nothing intrinsically feminine about dresses versus pants.
What I find bizarre is that this media revelation about Rachel Dolezal has been reported by right-leaning news outlets as if race is a biological reality. It has been reported on by left-wing media more correctly as a social construct.
Have conservatives now embraced the concept of biological race?
Some people think that their similar looking neighbors in the country on their border belong to a different race than them. If you get on some race-conscious websites, a number of the people on those websites believe that.
The facts are different humans across the globe will behave differently under similar circumstances. If that is the definition of race, then we have number of races.