The Y- Chromosome is specific to males and therefore very helpful in sexual assault
cases. Commonly forensic used Y-ST Rs alleles are single–copy loci, however it is known
that Y –chromosome shows several structural variants such as copy duplications which
can complicate evidentiary samples Y-ST R profile analysis. With this work we focus
on a DYS448 duplication obtained in a sexual assualt case evidence samples and the
suspect reference sample matching