Briefing: Who do you think you are? What DNA tests reveal—and what they don't

DNA testing has evolved into a critical tool for both personal identity exploration and criminal investigations. Its application in identifying individuals has transformed how cases are approached.

The case of the Golden State Killer illustrates the potential of DNA testing in solving long-standing criminal cases. After decades of eluding capture, advancements in DNA technology played a pivotal role in his identification.

However, while DNA tests can reveal certain genetic connections, they also have limitations. The implications for personal identity and the ethical considerations surrounding data usage remain areas of ongoing discussion.