Re: Genetic Differences Between Races
by
gravesjl
08/20/2008, 11:25 AM #
The research discussed by Slate on the genetic basis of Jamaican sprinting ability is severely flawed. They didn't do an exhaustive interview of geneticists or scientists who do work in this area, certainly no one called me to comment on this claim. In 2005 I wrote about genetic claims related to African ancestry and track & field (in The Race Myth: Why We Pretend Race Exists in America) and this year I have 3 articles on race in sports in The Encylopedia of Race and Racism.
The first flaw results from the idea that sprinting (a complex athletic ability) can be reduced to the differences in one specific genetic locus (even one that contributes to muscle fiber type.) We don't have extensive surveys of even this locus in world populations, so we can't say that Jamaica is the only country that has high frequencies of this gene. For example, even with the reported frequencies in the article, the United States should have produced far more world class sprinters than Jamaica, due to population size alone. The article's argument also relied on muscle fiber type measurements (the Quebec study) that were by no mean inclusive and we again simply don't know about the distribution of these frequencies with any accuracy across the world. I also reviewed the literature on hormone levels and showed similar flaws with regard to how these are related to supposed sprinting ability.
What is most interesting about this question is why does it always result when some group of African derived people excel in track and field, when at the same time no one is making a genetic argument over Michael Phelps 8 gold medals in swimming? The same muscle groups that are used by runners are used in swimming. The dialog has been located on Phelps coaching, the dedication of his mother, his training schedule, and to some degree his feet size, but no one is searching for genetic variants accounting for these. This reveals the inherent racial ideology behind claims of genetic difference accounting for the supposed greater athleticism of Africans and their supposed limited cognitive potential.