Saudi Journal of Medicine (SJM)
Volume-4 | Issue-02 | 122-129
Original Research Article
An Investigation of Inheritance Pattern of Fingerprints of Nigerian Families Resident in Rivers State, Nigeria
Thank God C. Omuruka, Chinagorom P. Ibeachu, John N. Paul, Jenifer Jaiyeoba-Ojigho and Favour O. Erezil
Published : Feb. 28, 2019
Abstract
Background: The ridge like impressions noticeable on the entire finger is called fingerprint. The study of fingerprints as a means of identification is called dactyloscopy and this process requires the comparison of the fingerprints of a yet to be identified individual to that of others within a data base to ascertain the extent of similarity; so as to draw inference of its origin. There is paucity of information on the Digital Patterns in Parents and Outcome in Offspring. Aim and Objective: This research was aimed at investigating the combinations of digital patterns in parents and outcome in offspring in Nigerian families resident in Rivers State, Nigeria. This study was done specifically on the digital prints. Materials and Methods: In this study a cross-sectional study design was adopted to determine the inheritance patterns of fingerprint and lip print among 150 families in the study population. The inheritance patterns of these traits were compared to each other. Convenient sample method was used. Generally statistical analysis was performed using XLSTAT (Addinsoft Version 2015.4.01.21575). Chi-square analysis was used to analyse association, trends and distribution difference of the traits (confidence level at 95%). Results and Discussions: The expressivity of the one fingerprint pattern over the other was tested using adjusted Mendelian Chi-square analysis. It was expected that if a trait is dominant over the other it will not have a distribution result that is different from the critical chi-square value of 3.841. Thus, indicating insignificance. Traits with mathematically similar pattern of distribution to that postulated by Mendel will be considered the dominant trait irrespective of its distribution. When the inheritance of the various traits was compared on the assumption of independent existence and dominant-recessive expressivity using the Mendel mathematical model, it was observed that Arch was dominant over Loop and whorl. While loop influenced Whorl in an incomplete fashion. The findings from the study suggest that the finger print pattern is tri-allelic non-codominant with a phenotypic expression of reduced penetrance. Conclusion: This suggests that the finger print pattern is tri-allelic non-codominant with a phenotypic expression of reduced penetrance