Had no idea detectives were following him, discarded a paper coffee cup, which was seized and immediately tested for dna. Detectives and analysts waited as their case, now more than 30 years old, hung in the balance. As im going along through the series of markers, theyre matching, and so its almost like winning a lottery, and youre saying, okay, thats a match. Thats a match. Scharf the odds of this not being William Talbott was 1 in 180 quadrillion. You would have to have 36 Million planets with the same population as earth to find William Talbott with that dna profile. Narrator oldfashioned forensics also sealed talbotts fate. His Palm Print matched the partial Palm Print lifted from jays Van Way back in 1987
In the same way as lawenforcement databases like codis. Moore in codis, youre looking for that exact match, but in genetic genealogy, we can go way beyond that and use those hundreds of thousands of markers to predict second, third, fourth cousins and beyond. Narrator however, there are serious concerns about Law Enforcement having access to the dna of people who have never committed a crime. That problem can be resolved if people are told their dna is going to databases used by police, which is exactly what a company called gedmatch did. Gedmatch posted a notification on their site alerting their users that Law Enforcement was using the database, and that was what i needed to allow me to finally make the decision to help Law Enforcement. Narrator in 2018, investigators took the Dna Profile from jay and tanyas case
Narrator even though sierra Bouzigards Murder appeared to be sexually motivated, no dna was recovered from her rape kit. But thanks to sierra, the killer left his dna behind. She apparently fought off a sexual assault before being killed. The coroner was able to obtain a Dna Sample from under the fingernails of sierra. Narrator this meant the killer would likely be scratched up. Even better for investigators, this Dna Profile matched other evidence at the scene. Quaal there was a profile obtained from a candy wrapper
At the time of her murder. Because Dna Technology over the years has gotten more sensitive, we can now develop Dna Profiles from just a few skin cells. So, six or seven cells, we can get a Dna Profile. Narrator using a process called ystr dna, which targets the Y Chromosome confined to males, analysts lifted a Dna Profile from Chanins Neck and face. The profile matched the Y Profile for Clay Starbuck and any of his male children. Narrator two of the starbucks children were adult males, and both had solid alibis for the time of the murder. That left only one person Clay Starbuck. The Dna Profile that we got left little doubt in our mind that it was Clay Starbuck. Narrator but clay had an explanation for his dna. He used to live in the house. Of course his dna would be there. Analysts disagreed
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