Abstract
A NOVEL CLASSIFICATION FOR FINGER FRICTION RIDGES (DERMATOGLYPHIC PATTERNS)

Eric O. Aigbogun (Jr.)*, Chinagorom P. Ibeachu, Blessing C. Didia, and Kenneth S. Ordu

ABSTRACT

Since 200 BC till date, researchers and investigators have studied the fingerprint patterns for extensive purpose using different classifications that have proven useful in personal identification, hereditary, genetic predisposition, diseases and susceptibility, psychosocial status, behaviour, and criminality, as well as Intelligence Quotient (IQ). This study examined newer classification techniques for dermatoglyphic patterns, in the view to broaden its applicability in scientific research. The study utilised the general fingerprint types; Arch (A), Loop (L) and Whorl (W) without consideration of their variations. The digits (D) were number D1 to D5 or 1D to 5D depending on the researcher‟s choice, which corresponded to the 1st finger (thumb) to the 5th finger (little). A1-5, L1-5, and W1-5 were assigned for the thumb to the little finger of the right (R) and left (L) digits respectively and four (4) classifications were introduced. The distribution on corresponding fingers for both hands were presented as follows; Arch (RA, LA [A1]; RA, LL [A2], RA, LW [A3]), Loop (RL, LL [L1], RL, LA [L2], RL, LW [L3], Whorl (RW, LW [W1], RW, LA [W2], RW, LL [W3]). Identical (symmetrical) patterns on corresponding fingers were regarded as superscript of same alphabetic representation (AA, LL, and WW) while unidentical (asymmetrical) patterns were regarded as subscript of the other alphabetic representation (AL,W, LA,W, WA,L), which are combinations of either of the three (3) patterns (AL, AW; LA, LW; WA, WL) with reference to the right finger (95% right hand bias) as the normal script. In this regard, study introduced finger ridge count for the paired digits; FRC_1D-5D, finger ridge count for the right hand; RFRC, and the left hand; LFRC. In consideration of the inheritance pattern, this study disregarded the right-hand bias, thus reclassifying the patterns into six (6); A, L, W, AL, AW, and LW. This current individual classification is simple, direct and does not require any mathematical manipulations. This new classification can find use in clinical and forensic anatomy, anthropology and genetics.

Keywords: Combination patterns, finger friction ridges, inheritance, novel classification.


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