Search results for "DNA typing"
showing 4 items of 4 documents
HLA Class I and Class II Polymorphism in Three Sicilian Populations
2007
Two human leukocyte antigen (HLA) class I loci (HLA-A and HLA-B) and one class II locus (HLA-DR) were typed at the DNA level in the Sicilian population. Study participants were of Sicilian origin (183 for class I loci and 260 for class II loci) and live in three towns, chosen on the basis of geographic position and different historical events. These towns are Sciacca (southwest Sicily, located at sea level, conquered by Arabs in a.d. 814), Piana degli Albanesi (northwest Sicily, 720 m above sea level, has maintained religious, cultural, and linguistic peculiarities traced to Albanian settlement in 1488), and Troina (northeast Sicily, 1,120 m above sea level, known as the first settlement of…
DNA TYPING OF BLOODSTAIN: A CASEWORK OF MORTAL CRASH
2008
Since 1997 the analysis of DNA recovered from handled objects, or trace DNA has become routine and is frequently demanded from crime scene examination. However, this analysis often produces unpredictable results. The factor affecting the recovery of full profiles are numerous, and as demonstrated in casework and research, retrieving useable profiles from trace DNA exhibits is not guaranteed. There are numerous factors that affect the rate of recovery of full profiles, such as the ability of the individual to shed cells, the substrate surface, the time of contact and delay until analysis, and the environment. In addition to these external conditions, there are many varying methods used to co…
DNA typing from vaginal smears slides and stained sperm-positive evidence in suspected rape cases.
2009
Rape is a largely un-witnessed crime, and may be difficult to obtained statements from the victim, since most of the victims suffer from emotional damage as well as physical injury. The physical examination by forensic specialist is extremely important.
Signature of recent historical events in the European Y-chromosomal STR haplotype distribution
2005
Previous studies of human Y-chromosomal single-nucleotide polymorphisms (Y-SNPs) established a link between the extant Y-SNP haplogroup distribution and the prehistoric demography of Europe. By contrast, our analysis of seven rapidly evolving Y-chromosomal short tandem repeat loci (Y-STRs) in over 12,700 samples from 91 different locations in Europe reveals a signature of more recent historic events, not previously detected by other genetic markers. Cluster analysis based upon molecular variance yields two clearly identifiable sub-clusters of Western and Eastern European Y-STR haplotypes, and a diverse transition zone in central Europe, where haplotype spectra change more rapidly with longi…