Polycentric Evolution
Weidenreich pioneered the Polycentric (multiregional) or Weidenreich Theory, which asserts that that the human races have evolved independently in the Old World from Homo erectus to Homo sapiens sapiens, while at the same time there was gene flow between the various populations.
A vocal proponent of the Weidenreich Theory was Carleton Coon, however Coon modified Weidenreich's Polycentric view of evolution, since he stressed far less on gene flow.
Read more about this topic: Franz Weidenreich
Famous quotes containing the word evolution:
“The more specific idea of evolution now reached is—a change from an indefinite, incoherent homogeneity to a definite, coherent heterogeneity, accompanying the dissipation of motion and integration of matter.”
—Herbert Spencer (1820–1903)