Population migration and the variation of dopamine D4 receptor (DRD4) allele frequencies around the globe

Evolution and Human Behavior • Vol/Iss. 20(5) • Elsevier • • Published In • Pages: 309-324 •
By Chen, Chuansheng, Burton, Michael L., Greenberger, Ellen, Dmitrieva, Julia

Hypothesis

Within each region, societies with the lowest percentage of long DRD4 alleles will tend to be sedentary, while societies with the highest percentage of long DRD4 alleles will tend to be nomadic (313-314).

Note

Nomadic societies had on average a 10.4% higher rate of long alleles than sedentary societies after controlling for macro-migration. After controlling for autocorrelation, the significance level for micro-migration dropped from p < 0.05 to .11.

Test

Test NameSupportSignificanceCoefficientTail
Multiple regressionSome supportUNKNOWNUNKNOWNUNKNOWN

Variables

Variable NameVariable Type OCM Term(s)
Distribution of DRD4 AllelesAssociationGenetics
Nomadicism/SedentismAssociationSettlement Patterns