Evaluation of Facial Proportions and Their Association with Thumbprint Patterns among Hausa Ethnic Group

Abstract

Background. Evolutionary forces such as founder effect resulted in reproductive isolation and reduced genetic diversity may have led to ethnic variation in the facial appearance and other features like fingerprints pattern. Aim. To determine the pattern of facial proportion based on neoclassical facial canon. The associations between facial proportions and thumbprint patterns were also investigated. Subject and Methods. A total of 534 subjects of 18-25 years of age participated. Direct sensing and photographs methods were used to determine fingerprint and facial features, respectively. Fisher's Exact test was used to test for association between variables. Results. It was observed that in both males and females there was no (0%) occurrence of classical canon of facial proportion. There was also no association between sex and facial proportions. A significant association was found in between thumbprint patterns and vertical class III neoclassical facial proportion only when the frequency of both left and right thumbprint patterns was considered a single entity. There is no significant association between the thumbprint patterns of the right and left thumbs with vertical horizontal facial proportions in male and female participants. It was observed that right and left thumbs have more tendency of significance with facial proportion in males and females, respectively. Conclusion. Fingerprint pattern and its associated features may be controlled by a different mechanism such that the two may correlate differently with other features as the case may be with facial features.

Prediction of Nasolabial Distance using Thumbprint Ridge Density among the Hausa Population of Nigeria

“…Some genes that were reported in low to medium levels in the skin were found to play a key role in the determination of facial features [31,32]. Some level of association was also documented between thumbprint patterns and facial proportions [4]. These explain the possible linear correlations observed in this study.…”

“…Therefore, it was suggested that the two traits (fingerprint and facial features) may share the same intrinsic factor that controls them, leading to some significant degree of correlation between the two variables [4]. In previous studies, the features of both fingerprint patterns and facial morphology were reported to be strongly influenced by genetic factors.…”

“…are complete and open [3]. Due to developmental overlap between fingerprint formation and nasolabial facial formation, there is the possibility of sharing common genetic factors that interplay between the two parts [4].…”

Types and frequency of fingerprint minutiae in individuals of Igbo and Yoruba ethnic groups of Nigeria

“…Several studies have recently been undertaken on fingerprints from the Hausas of Nigeria. Recent studies by Adamu et al (2016aAdamu et al ( , 2016bAdamu et al ( , 2017aAdamu et al ( , 2017b, Adamu (2017), and Adamu and Taura (2017) have investigated the minutiae in the Hausa population in Kano and estimated its association with sexual dimorphism in epidermal ridges, sex variation in thumb minutiae, estimation of body mass index, and sex estimation.. There is therefore a need to assess the type and frequencies of different fingerprint minutiae in Nigerians of other ethnic origins, including Igbo and Yoruba.…”

Facial Anthropometry Measurements Using Three-Dimensional Stereophotogrammetry Analysis Among Nigerians

“…F ace and the fingerprint are among the biological features that determine the uniqueness of an individual. 1 Although beauty is subjective, the neo-classical canons have been used as a basis for defining a beautiful face from antiquity to modern days. 2 This has been useful to clinicians in the description, diagnosis, and surgical treatment of abnormal skeletal and facial patterns.…”