Edited sentence: + Percentage genetic distances among major continents based on 120 classical polymorphisms.A study by Cavalli-Sforza using 120 blood polymorphisms provides information on genetic relatedness of the various continental populations.According to the study all non African populations are more closely related to each other than to Africans.Africa		Oceania	 East Asia		Europe.America		22.6		14.6		8.9		9.5.Averaged over several traits this can give the overall genetic relatedness of various populations.Cavalli  uses this to poke fun at Arthur de Gobineau, the 19th-century French author of the Essay on the Inequality of Human Races, which helped inspire German racism.Cavalli contends that if evolution of the races had proceeded independently without race mixing then the minimum genetic distance to Africa should at least be 24.7 as with Australia.Cavalli contends that the only reason for this short distance is significant gene exchange between Africa and Europe.Cavalli says, of de Gobineau  he would die of rage and shame at this suggestion since he believed that Europeans.East Asia		20.6		10.Europe	        	16.6		13.5		9.7.For example the frequency of RH negative individuals is 50.4% among Basques is 41.2% in France and 41.1 in England.Genetic distance is a measure used to quantify the genetic differences between two populations.In its simplest form it is the difference in frequencies of a particular trait between two populations.It is based on the principle that two populations that share similar frequencies of a trait are more closely related than populations that have more divergent frequencies of a trait.Oceania		24.7.The most striking discovery is that the shortest genetic distance from Africa is to Europe at 16.6.This is consistent with the view that all non-Africans are descended from a single population that lived in Africa.This is counterintuitive since blacks and whites have the most divergent skin colors.Thus the genetic difference between the Basques and French is 9.2% and the genetic difference between the French and the English is 0.1%for the RH negative trait.What is interesting is the two most genetically divergent groups are those that are defined as Black, that is Africans and Oceanians with a genetic distance of 24.7.were the most genetically pure race, the most intellectually gifted and the least weakened by racial mixing