Races are defined as populations differing in the incidence of certain genes, but actually exchanging or potentially able to exchange genes across whatever boundaries (usually geographic) separate them.”

        As many authors give the concept of race, we describe here the following Dobzhansky also give the definition of race it is defined as in the incidence of certain genes population differing, but have ability to actually genes exchange across any boundaries separate them. As we explain this further; physical appearance of population group depend on the different type of racial group, in molecular genetics the recent development have supplanted by definition these criteria by the predominance race of certain genes as well as on supplementing it has an influence that available archeological, regarding modern anthropological as well as biological information. Among individuals of the same species variation of genetics demonstrates the naturally occurring genetic differences [1].

        In the face of changing environmental circumstances this variation flexibility permits as well as population of survival. As a result, an advantage is frequently considered the genetic variation, as for the unexpected it is the form of preparation. In Africa, in small area we believe that modern human initiated, they all belong to the same race as we have to conclude this as well as over the past 150,000 years through genetic divergence different races came into being. Non-random mating between the isolated populations because of this divergence is occurred. Within the genomic diversity as well as by mutation population is determined primarily along with other factors like effective size of population and amide the population degrees of migration. Because of this development the definition of races has changed and the Dobzhansky give the new definition [2].

References of certain genes