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At the beginning of 2006 more than 301,000 immigrants resident in Italy resulted to come from Tunisia and Morocco, 66% of which are male subjects; in addition, it is estimated that some other thousand are clandestine. Our data show that there is an increasing involvement of Tunisian and Moroccan individuals in paternity testing and in individual identification cases. For these reasons, the aim of this work was to enrich forensic Y-chromosome databases with Northern Africa data to better know markers frequency and their distribution across these populations (in YHRD there are 246 Tunisian samples and 0 Moroccans, access date to www.yhrd.org: August 2007). 103 Tunisian and Moroccan healthy male donors were typed by 17 microsatellites extended haplotype and 41 Y-SNPs. A high-resolution level database was created, including both haplotype and haplogroup for each sample. This study confirmed that …