Mickey Mouse
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BBM@Edmo
I made a mistake. It wasn't the Nikki Hidrich case that Don Jones worked on it was this case People v Yablonsky:
"DNA analysis of the sperm cells was performed in 1999. San Bernardino County Deputy Sheriff’s criminalist Donald Jones testified based on his analysis of the DNA results that the sperm cells were from a single donor. Jones compared the DNA from the sperm cells to other DNA obtained from 16 blood samples apparently taken from the crime scene, and also obtained from known donors. Those comparisons did not produce a match.
In January 2003, another criminalist employed by the San Bernardino County Sheriff’s Department conducted a more sophisticated analysis of the sperm and semen contained in the vaginal swab from Rita Cobb. This second analysis produced a complete DNA profile of 13 markers which then was entered into a nationwide database, CODIS DNA. Some years later,2 the criminalist was notified that the sample she had entered matched defendant."
People v. Yablonsky CA4/2 – CourtListener.com
Conducted a more sophisticated analysis
To me, that implies technology advanced in the intervening years, not that Jones necessarily screwed up. He may have, but there have been dramatic changes in DNA analysis over the years.