The PCR method has been applied to amplify two Variable-number-Tandem-Repeat (VNTR) sequences. The high polymorphism of these VNTR systems can be usefully applied in medical legal fields such as paternity testing and individual identification. The VNTR systems utilized were: ApoB and YNZ 22. The study was conducted on a three-generation family of thirteen members, whose relationship was previously established using conventional blood systems. The results confirm the Mendelian inheritance of the alleles found and the suitability of the PCR method for forensic purposes.