Background: Studies have shown different results on the association between fingerprints, gender, and blood groups in different settings. There is one published article in Sudan. Objectives: This study investigates the prevalence of fingerprint characteristics and assesses if there is an association between fingerprints and gender or ABO blood groups and rhesus blood types in Sudan. Results: A total of 394 participants were enrolled in the study. Their age ranged between 19 and 24 years, with a mean (standard deviation) of 21 (3) years. Of these 394, 114 (28.9%) and 280 (71.1%) participants were males and females, respectively. Moreover, 111 (28.2%), 63 (15.9%), 13 (3.3%), and 207 (52.5%) belonged to blood group A, blood group B, blood group AB, and blood group O, respectively. While 373 (94.7%) participants had rhesus-positive blood, only 21 (5.3%) had rhesus-negative blood. Of the 394 fingerprints, 2476 (62.84%) were loops, 1278 (32.44%) were arches, and 186 (4.72%) were whorls. Fingerprints significantly differed between males and females, blood groups, and rhesus factors. Conclusion: Loops (62.84%) and arches (32.44%) were common fingerprints. Fingerprint characteristics were significantly different between males and females, different blood groups, and rhesus factors.
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