Students use primers for a 300 base pair Alu insertion in chromosome 16 (PV92) to determine their own genotype. They can then compare their class results with others around the world over the internet.

• For 25 students
• Set up 30 minutes; PCR 2 hours or overnight; electrophoresis 45 minutes

Also required: Micropipettes (5 to 50 µl) with tips, water bath, thermal cycler, electrophoresis tank and power supply.