Category Archives: DNA mixtures

Comparing DNA mixtures with Trueallele and STRmix gets mixed results

Where Traditional DNA Testing Fails, Algorithms Take Over Powerful software is solving more crimes and raising new questions about due process. [excerpt] Studies have only established the validity of the available software in certain circumstances (such as a DNA mixture … Continue reading

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Controversial use of familial DNA searches helps lead to finds in cold cases

A broader look at familial DNA use within criminal investigations. Some good, some bad. What appears in all examples, is that ‘presumptions’ of guilt can be incorrect and send prosecutors off in the wrong direction. What’s also apparent is that … Continue reading

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Messed up DNA testing fixed after 24 years in prison; Lazy ballistics

Wisconsin man exonerated and released from prison after 24 years after Milwaukee County District Attorney’s Office found lab analyst made errors in original 1992 DNA analysis report (Milwaukee Journal Sentinel) A new study shows that PredPol, a predictive policing software … Continue reading

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When crime labs go rogue. Safety suffers. Honesty seems more doubtful.

Max Houck (@maxmhouck) used to run the Washington DC Forensic Science facility which then boasted as being “independent” a la Houston’s Forensic Science Center. Above is his Twitter response to and post about police managers refusing an open and transparent scientific … Continue reading

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DNA “falsifiability” gets some airtime, CRIME LAB chaos in MA, “vigorous debate’ in SBS

The latest in scientific quandaries within forensics from the NY Legal Aid Society Newsletter. Fool’s Gold: Legal Aid Society DNA Unit featured in Atlantic Magazine article about the increasing use of unreliable DNA “science” in the criminal justice system DNA … Continue reading

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FBI DNA software revamp falls onto each US state to review past convictions

This article contains a broad spectrum of conflicting statements about how serious the “DNA software caused recount” will effect past cases. Of course, the law enforcement side estimate seems confident no major retrials will occur. That’s not what is happening … Continue reading

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US forensic orgs and DAs rather quiet about reviewing and retesting DNA since 1999. 

This is from NPR. It also mentions the climate of faulty forensics like bitemarks, hair comps, casting doubts about reliabilty of courtroom experts.  http://www.npr.org/2015/10/09/447202433/-great-pause-among-forensic-scientists-as-dna-proves-fallible?sc=tw

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Concern grows over DNA evidence errors in Texas and likely throughout the US

Applications of DNA methods which are subjective is creating a scenario in TX which will probably be repeated across the entire US. Confidence in past convictions is rapidly deteriorating. One might say the enthusiasm for forensic DNA as a “magic … Continue reading

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“Top 5 Junky Forensic ‘Sciences,’ or, ‘Why are forensics under fire now?’ “

The veteran law enforcement, law and science blogger at Grits for Breakfast’ in TX has some sharp points to make about his picks for the worst in forensic methods. There are more than just bitemark “interpreters” which he includes in this list. … Continue reading

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Altering the playing field of Forensic DNA statistics to bring major changes to criminal justice cases

  The phrase “don’t mess with Texas” surely is true. The state’s Department of Public Safety Forensic Science Commission’s new stance on crime lab DNA mixture outcomes surely is going to bounce around the county like a flash bang grenade. … Continue reading

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