Mitochondrial DNA Analysis in Identifying 9/11 World Trade Center Victims

Mitochondrial DNA (mtDNA) analysis was crucial for identifying victims of the September 11, 2001 World Trade Center attacks. Uniqueness: mtDNA is maternally inherited with a high mutation rate, allowing individual discrimination. Preservation: mtDNA resists degradation better than nuclear DNA, surviving in severely damaged remains. Reference database: Pre-existing mtDNA samples from relatives enabled matching. Process: PCR amplified mtDNA from remains, sequenced, and compared to references. Complexity: The process was time-consuming and required specialized labs, sometimes taking years for identification.