E532 - 13-yr-old Twin Brothers’ DNA Found On Murdered Woman - Cops Must Figure Out Which Twin Is Lying
Published: July 16, 2026
Duration: 54:54
A forensic DNA test usually scans about 20 fixed markers of DNA. It may take a few days but it’s enough to differentiate a suspect from the rest of the world with a near perfect level of certainty.
Except for identical twins.
It’s not a perfect analogy but think of DNA as a 3 billion letter book. Most people have about 20 chapters that are completely different. For identical twins, their entire book is identical except for about 8 typos. Not 8 different chapters, or sentences, not even 8 different words. 8 letter typos amongs...