The present work is devoted to the analysis of interaction of two notions “linguistics” and “genetics” in the framework based on the material of two languages: English and Russian. The relevance of this investigation consists of discussion that speech is an evolutionary acquisition of human beings and it must also have a genetic basis. Determination of the genetic basis of the function and the peculiarities native speakers in this matter. The practical research value is that the results obtained can provide a broader understanding of the ways of forming the English and Russian mentality.