Commentary on Derish and Sokal's “A Classification of European Populations Based on Gene Frequencies and Cranial Measurements: A Map-Quadrat Approach” (1988): Evidence for the Lack of Taxonomic Structure but the Congruence between Genetic and Morphometric Information

Published in 1988, the paper by Derish and Sokal on the "classification on European populations" represented a methodological turning point in the assessment of the possible relationships (co-variation extent) among genotype (gene frequencies), phenotype (morphometrics), culture (language), and geography within a relatively limited and coherent eco-spatial unit.