Population Genetics
Risch has condicted significant work on the nature of human differences on a geographical scale. For instance, he used social and genetic data to analyse genetic admixture from White, African, and Native American ancestry in Puerto-Rico, as well as relating this to geographical variation in Social status
Risch considers that genetic drift is a more compelling explanation for the carrier frequency of lysosomal storage diseases in Ashkenazi Jews than heterozygote advantage, in light of analysis of the results of recent genetic testing by his collaborators and himself.
After mapping torsion dystonia by linkage disequilibrium (LD) analysis he found it was genetically dominant and was a founder mutation. Other work has focused on the genetic basis of Parkinson's disease, hemochromatosis, multiple sclerosis, diabetes, autism, epilepsy and hypertension.
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Famous quotes containing the word population:
“In our large cities, the population is godless, materialized,—no bond, no fellow-feeling, no enthusiasm. These are not men, but hungers, thirsts, fevers, and appetites walking. How is it people manage to live on,—so aimless as they are? After their peppercorn aims are gained, it seems as if the lime in their bones alone held them together, and not any worthy purpose.”
—Ralph Waldo Emerson (1803–1882)