ABSTRACT
Fingerprints from 61 pairs of male monozygotic twins (MZ), 47 pairs of female MZ, 40 pairs of same-sex male dizygotic twins (DZ), 44 pairs of same-sex female DZ, 4 pairs of opposite-sex DZ, and 28 brothers and 31 sisters of those twins are used for the study of fingerprint similarities. Similarities of fingerprint pattern, ridge count, and minutiae are evaluated for two population groups genetically related to each other in different degrees. It is concluded that fingerprint similarities, including pattern, ridge count, and possibly minutiae, between MZ individuals are significantly higher than those between other population groups, including DZ twins.
Subject(s)
Dermatoglyphics , Dermatoglyphics/classification , Female , Forensic Medicine/methods , Humans , Male , Pregnancy , Twins, Dizygotic , Twins, MonozygoticABSTRACT
A FORTRAN program has been written to compare the minutiae coded in an"unknown" fingerprint with the minutiae of fingerprints stored in a data base. The criteria for matching are scores based on the type and number of minutiae matched. Minutiae of low relative frequency have higher scoring weights than those that are more common. The matching mechanism is tested by using a fingerprint coded several times, first by a single individual and then by six other individuals who have no previous knowledge about fingerprints. These tests yield satisfactory results.
Subject(s)
Computers , Dermatoglyphics/classification , Forensic Medicine/methods , Female , Humans , Pregnancy , Twins, MonozygoticABSTRACT
A fluorescence immunoassay method is used in the differentiation of A1 and A2 bloodstains. Anti-A antiserum is first absorbed onto the stain. The IgM content in the eluate is then quantified by commerical Immuno-Fluor kits. The binding difference of A1 and A2 cells is retained in stains. This difference and the quantitative evaluation method provide a potential basis for blood typing or subtyping application.
