There is no such thing as race in scientific perspective.
The only thing that people see different is skin color and that depends on the climate a certain group has been living in, and the changes happens epigenetically not genetically, big difference. These difference are minor but over generations they stack up and thus you see different skin, hair and eye colors being dominant in different groups.
Thats how adaption works.
claiming that race is a genetic construct would be of same meaning as saying races are different species not one. Which is clearly wrong and frankly, stupid. (EDIT: Note here that as mentioned below while genetic diversity does indeed exist in human gene pool it is not as large as some assume it is, its actually quite small and most of the diversity we see in characteristics is due to epigenetics not genetic structures themselves. Basically how those structures are expressed. )
Genetics are different than epigenetics. (as in concepts)
And genetic diversity in human gene pool although plays role but very minor and to some extent insignificant compared to that of epigenetics in
what society sees as identifiers of race. For the IQ strawman that some ignorant people like to bring up to make them feel superior.
Here are some of the factors affecting IQ
http://iqandenvironment.blogspot.com/20 ... -that.htmlAnther one :
http://www.independent.co.uk/news/scien ... 33506.html