Re: Biological race is a category mistake and bad science
by
Ben017
08/29/2008, 2:23 AM #
"The bottom line is that, and good biologists will tell you, there is more genetic variation within any so-called racial group than between them. Thus, the category of race makes absolutely no statistical or ontological sense."
Isn't this the Lewontin fallacy? Check out Jon Entine's article on race in the context of sport & medicine. Also see 'Survival of the Sickest' by Dr Sharon Moalem <link>
"1. Humans are 99.9 percent the same. Therefore, race is "biologically meaningless."
This statement finds its origins in the research of Harvard University geneticist Richard Lewontin during the 1960s. "Human racial classification is of no social value and is positively destructive of social and human relations," Lewontin concluded in The Genetic Basis of Evolutionary Change in 1974. "Since such racial classification is now seen to be of virtually no genetic or taxonomic significance either, no justification can be offered for its continuance."
Coming from a geneticist, Lewontin’s views had enormous influence and he was making a valid argument at the time. As Laval University anthropologist Peter Frost points out, Lewontin was referring to classic genetic markers such as blood types, serum proteins, and enzymes, which do show much more variability within races than between them. But his comments are widely misinterpreted even today to extend beyond that limited conclusion. Further research has shown this pattern of variability cannot reliably be extrapolated to all traits with higher adaptive value.
The 99.9 percent figure is based on DNA sequences that do not differ much between people or even between most mammals. As Jared Diamond, UCLA physiologist has noted, if an alien were to arrive on our planet and analyze our DNA, humans would appear as a third race of chimpanzees, who share 98.4 percent of our DNA. Just 50 out of the 32,00 genes that humans and chimps are thought to possess, or approximately 0.15 percent, may account for all of the cognitive differences between man and ape.
The impact of minute genetic differences is magnified in more sophisticated species.
....
large-scale study of the variability in the human genome by Genaissance Pharmaceuticals, a biotechnology company in Connecticut, has convincingly shown the fallaciousness of arguments tied to the 99.9 percent figure. The research shows that while humans have only 32,000 genes, there are between 400,000 and 500,000 gene versions. More specifically, they found that different versions of a gene are more common in a group of people from one geographical region, compared with people from another.
The implications are far reaching. By grouping individuals by the presence and variety of gene types, physicians may someday be able to offer treatments based on race or ethnic groups that will have been predetermined to work on a genetic level. Kenneth Kidd, a population geneticist at Yale University who is not connected to the study, said it confirmed the conclusions of those who have maintained that there is in fact considerable variability in the human population. He also chided the government and some genetic researchers for having stripped ethnic identities from the panel of people whose genomes have been searched for gene sequences."