SE23 wrote:Is this truly a respected opinion, if race was purely a social construct, then why would the national health service be asking for members of the black and asian community to give blood and organ donors ? Biologically there must be a difference between races.
At the individual level, racial identification is a poor predictor of actual traits.
* Between a Chinese and my white neighbor, there are only 40% of chances that my neighbor is genetically closer from me than the Asian. In other words, inter-individual variations are predominant.
* We are all of recently mixed ancestry, some of us are simply more the product of homobreeding than others ("purer white" because of higher reproduction rate between white people). And historically we were all Africans.
At the population level, racial identification is well correlated with some genetic variations.
* Some variations are more often associated with others. Which means that a black skin is more often associated with some variations. But not all black people have it, and not only black people have it. Ex: a drug "for black people", targeting a specific gene, may be a benefit to 70% of black people and 20% of white people.
* Statistical biases are rarely caused by new variations introduced during the isolation of some human groups. They mostly result from the fact that the initial migrants only carried a small part of the genetic pool. This is why the black population has a far higher genetic diversity than other population.
* You can accurately categorize people from their genes for the same reason that skin color can be read from genes.
* Many variations are poorly correlated with racial identification.