Who knows, there may be a scrapbook of hair mementos
*Y’all think ‘hair’ is his tell?
…The trouble for detectives, or anyone else seeking to figure out whom a strand of hair belonged to, is that
unless it contains a
root, which only a tiny percentage do, it’s about as helpful as a nearby rock.
These limitations emerge at trials, where forensic scientists have to explain to juries why, contrary to what’s seen on TV, they can’t get sufficient DNA out of a hair plucked from a sweater, and when amateur family historians stumble upon a deceased relative’s
hairbrush. Without a root, labs will tell them, there’s
no hopeof generating a DNA profile for a genealogy site.
Until now.
Ed Green, a paleogeneticist at the University of California, Santa Cruz known in the scientific community for
his work on the
Neanderthal genome, has developed a technique that makes it possible to recover and sequence DNA from hair without the root.
And over the past 18 months, he has been quietly cooperating with several law enforcement agencies, using this method to extract genetic profiles from the hairs of killers and victims in long unsolved crimes.
“It was kind of written in stone that you can’t do it, and now he’s doing it,” said Deputy Pete Headley of the San Bernardino County Sheriff’s Department in California, who was
involved in a case in New Hampshire that Dr. Green’s technique
helped crack.
Justin Loe, the chief executive of
Full Genomes, a genetics services company, called the technique “a game-changer.”
“Criminals think of wearing gloves or wiping down blood,” he said, “but fewer think to shave their head.”