A Descriptive Study of Gender Difference in Digit Ratio among Bini Ethnic Group of southern Nigeria

Abstract

There are divers works on digit ratio as a subject matter insinuating that it expresses dimorphism in sexes. If this is true, it means that it could serve as a means of identification in forensic and population studies. Digit ratio has also been used to investigate interpopulation affinity stating tribal or population similarity. [2] It has been speculated that sexual differences in 2D:4D are mainly caused by the shift along the common allometric line with non-zero intercept, which means 2D:4D necessarily decreases with increasing finger length, and the fact that men have longer fingers than women (which may be the basis for the sex difference in digit ratios and/or any putative hormonal influence on the ratios [3-5].