Before revision: Evidence Theoretical work by Luca Cavalli-Sforza showed that if admixture between expanding farmers and previously resident groups of hunters and gatherers is not immediate, the process would result in the establishment of broad genetic gradients.
After revision: Evidence Theoretical work by Cavalli-Sforza showed that if admixture between expanding farmers and previously resident groups of hunters and gatherers is not immediate, the process would result in the establishment of broad genetic gradients.