Citat:
Ursprungligen postat av
Fleuch
Jag försöker här tänka mig en studie där man visar(eller bevisar) att denna metod faktiskt fungerar i praktiken,
Det man hittar på en brottsplats är ju blod eller saliv eller annat biologisk material från en person, så det är vad man måste utgå ifrån. Så i en studie för validering måste alltså prover samlas in från anonyma personer. För sedan använda DNA-släktforskningsmetoden för att hitta personerna som det biologiska materialet kom ifrån.
Har en sådan studie genomfört, är vad jag undrar? För har man INTE gjort det, och lett i bevis att det faktiskt funkar, så framstår ju allt detta som tämligen rättsosäkert..
Från wikipediasidan om identifieringen av den amerikanska seriemördaren ”Golden State Killer”
”Identification of DeAngelo began in December 2017 by officials, led by detective Paul Holes and FBI lawyer Steve Kramer. They hit a roadblock when then District Attorney Tony Rackauckas rejected their request for a DNA sample, directing the Irvine PD to not release the sample. A pristine sample from the Smith murder was taken from a duplicate rape kit, something uniquely done by Ventura's medical examiner.[206] Once they uploaded the killer's DNA profile from a Ventura County rape kit to the personal genomics website GEDmatch.[207] The website identified 10 to 20 people who had the same great-great-great-grandparents as the Golden State Killer; a team of five investigators working with genealogist Barbara Rae-Venter used this list to construct a large family tree.[208] From this tree, they established two suspects; one was ruled out by a relative's DNA test, leaving DeAngelo the main suspect.[209]
Eventually, "through the use of genetic genealogy searching on GEDmatch, investigators identified distant relatives of DeAngelo—including family members directly related to his great-great-great-great grandfather dating back to the 1800s. Based on this information, investigators built about 25 different family trees. The tree that eventually linked to [DeAngelo] alone contained approximately 1,000 people. Over the course of a few months, investigators used other clues like age, sex, and place of residence to rule out suspects populating these trees, eliminating suspects one by one until only DeAngelo remained."[17]”
https://en.wikipedia.org/wiki/Joseph_James_DeAngelo