Y chromosome STR typing in crime casework.
Since the beginning of the nineties the field of forensic Y chromosome analysis has been successfully developed to become commonplace in laboratories working in crime casework all over the world. The ability to identify male-specific DNA renders highly variable Y-chromosomal polymorphisms, the STR sequences, an invaluable addition to the standard panel of autosomal loci used in forensic genetics. The male-specificity makes the Y chromosome especially useful in cases of male/female cell admixture, namely in sexual assault cases. On the other hand, the haploidy and patrilineal inheritance complicates the interpretation of a Y-STR match, because male relatives share for several generations an identical Y-STR profile. Since paternal relatives tend to live in the geographic and cultural territory of their ancestors, the Y chromosome analysis has a potential to make inferences on the population of origin of a given DNA profile. This review addresses the fields of application of Y chromosome haplotyping, the interpretation of results, databasing efforts and population genetics aspects.
Roewer
Lutz
L
Department of Forensic Genetics, Institute of Legal Medicine and Forensic Sciences, Charité-Universitätsmedizin Berlin, Hannoversche Str. 6, 10115, Berlin, Germany. lutz.roewer@charite.de
D041322:Chromosomes, Human, Y; D016172:DNA Fingerprinting; D005819:Genetic Markers; D006239:Haplotypes; D006801:Humans; D008297:Male; D044469:Racial Groups / Q000235:genetics; D011902:Rape; D020080:Tandem Repeat Sequences
D005819:Genetic Markers