One hypothesis about the ethological problem “Why and how had the type of face which we fell handsome been phylogenetically
determined” is offered. Face is one of important visual factors in selecting a sexual partner in modern men. During the human
evolution face features of sapiens had changed in a definite direction from presapiens features. Simple questionnaire experiments
showed that young female humans felt sapiens-characteristics-emphasized face sexiest or handsomest and felt presapiens-characteristics-emphasized
face ugliest among several types of faces. We sapiens may have phylogenetically acquired sexual releasing mechanism which
makes us feel sapiens-characteristic features handsome and presapiens ones ugly as the result of sexual isolation.