Category Archives: DNA mixtures

Forensics: World’s largest DNA sequencing of Viking skeletons reveals they weren’t all Scandinavian

Looks like Eric the Red may have been from New Jersey. — Read on phys.org/news/2020-09-world-largest-dna-sequencing-viking.amp

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Forensics: How not to exaggerate DNA Likelihood ratios for lawyers.

It all starts with lawyers and judges learning some science. Good luck with that. Someone says “knowledge is not understanding.” This piece desxribes the didference. By Raymond ValerioChief of the Forensic Science Unit, Bronx County (New York) District Attorney’s Office … Continue reading

Posted in AAFS, criminal justice, DNA mixtures, DNA profiling, forensic evidence exaggeration, Forensic Science, human identification | Leave a comment

Forensics: read every word. DNA mixtures – Do you understand them? | Forensic Context

A simple introduction to DNA mixtures in forensic science, what are they, why they occur and the issues with assessing their evidential value. — Read on http://www.forensiccontext.com/dna-mixtures-do-you-understand-them/

Posted in AAFS, CSI, DNA mixtures, DNA profiling, forensic evidence exaggeration, Forensic Science, Forensic Science Bias, forensic testimony, human identification | Leave a comment

Forensics: Convicted by software? Not so fast, says California lawmaker

The statements from the go to cop DNA mixture guru at TrueAllele continues to be self serving and problematic. Ive heard similar claims of accuracy from palm readers on TV. Doesnt seem to bother him much. Democratic Rep. Mark Takano … Continue reading

Posted in AAFS, Civil rights, criminal justice, CSI, DNA mixtures, facial recognition, fingerprints, forensic evidence exaggeration, US Crime labs | Leave a comment

Forensics: Pro prosecution NYPD DNA Database Continues to Grow, Legal Aid Society Says

Despite the NYPD’s promise to reduce its DNA database, it has grown, the Legal Aid Society says. — Read on http://www.ny1.com/nyc/all-boroughs/news/2020/07/02/nypd-dna-database-continues-to-grow-legal-aid-society-says

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Forensics: San Jose man not guilty in death-penalty child killing case

Its all about DNA mixture software interpretation. Sound familiar? San Jose man not guilty in death-penalty child killing case — Read on http://www.mercurynews.com/2020/06/19/death-penalty-case-jury-finds-san-jose-man-not-guilty-in-2016-child-killing/amp/

Posted in AAFS, criminal justice, death penalty, DNA mixtures, DNA profiling, forensic evidence exaggeration, prosecutorial misconduct, US Crime labs | Leave a comment

#Forensics: How DNA transfer is affected by “shedder” status. 

Any assumption that a DNA mixture can prove who was and wasn’t the perp gets clobbered in this study. Some people shed (i.e. leave) DNA more than others.  https://www.sciencedirect.com/science/article/abs/pii/S1872497319301164

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#Forensics: 16 minutes on DNA profiling, the good and the bad. From Dan Krane in Ohio

The opponents (i.e. prosecutors) to Dan’s methodology say that standards for minimum sample size and commercial profiling companies testing for inconsistencies and unreliabilities are not necessary. Of course they do. https://www.youtube.com/watch?v=tpPkmDeS3Dg

Posted in AAFS, costs of wrongful convictions, criminal justice, DNA mixtures, DNA profiling, Medical errors, police crime labs | Leave a comment

Forensics: Decertified DNA mixture methods affected 1300 convictions in the US.

An in-house DNA mixture program that has been abandoned by the NYCME’s office gets a jaundiced review by an ex-DA judge. Unfortunately, the legal and political barriers to its effect on past convictions is left up to lawyers to consider. … Continue reading

Posted in AAFS, costs of wrongful convictions, criminal justice reform, DNA mixtures, DNA profiling, Forensic Science, Forensic science misconduct, human identification | Tagged , , | Leave a comment

A New Solution to Countering Bad Science in Forensics | Lab Manager

Aussie study follows up on the unacceptable “ad hoc” nature of 30 different crime lab methods. They also demand for forensic science to become more open. Even DNA has befuddled courts into accepting “proprietary secrets” regarding crime lab software. — … Continue reading

Posted in AAFS, ABFO, Bitemarks, criminal justice reform, CSI, DNA mixtures, DNA profiling, forensic testimony, police crime labs, US Crime labs | Leave a comment