A Descriptive Study of Gender Difference in Digit Ratio among Bini Ethnic Group of southern Nigeria
ARC Journal of Forensic Science
This study investigated gender variation in digit ratios of the Bini ethnic group. The study had a descriptive cross-sectional design with volunteer's age ranging from 18-60 years. For the purpose of this study, an individual was considered to be a Nigeria of a particular ethnic group if the parents and four grandparents are of the same ethnic group. Materials and Methods: Cluster sampling method was used for the study. The selection and collection of required parameters relied on informed
... ed on informed consent of volunteers. This was done by giving them a copy of the informed consent letter which was signed and dated. A total of 400 subjects (225 males, 175 females) subjects were recruited for the study. The fingerprints were obtained using print scanner (Hp G3110 Photo scanner). Results and Discussion : Descriptive statistics of digit length of Bini ethnic group. In the males the following Mean±SD were seen: Left L2D (cm) 7.93±0.20, Right L2D (cm) 7.90±0.56, Left L4D (cm) 8.09±1.22, Right L4D (cm) 8.13±1.29; while in females, Left L2D (cm) was 8.05±0.27, Right L2D(cm) 8.06±0.31, Left L4D(cm) 8.10±1.19, Right L4D(cm) 8.12±1.21. The males had the Left Digit Ratio 0.98±0.03, Right Digit Ratio 0.97±0.02. While in the females the Left Digit Ratio was 0.98±0.05, Right Digit Ratio 0.99±0.04. The comparison between both sexes were significant with p=0.001. Conclusion: The Bini ethnic group has shown a marked difference in the digit ratio between both sexes. The shorter digit length and a lower digit ratio in males are considered to be typical masculine features, as such could be used as a marker for gender differentiation in a forensic investigation.