The document discusses analyzing a specific Alu insertion on chromosome 16 using PCR. Alu repeats are classified as SINEs and have approximately 500,000 copies in the human genome. The specific Alu insertion being analyzed, called PV92, inserted within the last 1 million years and can be used to study population genetics, paternity analysis, and forensics based on individuals' genotypes for the presence or absence of the insertion. PCR results show bands indicating either the presence or absence of the 300 bp PV92 Alu insertion.