Category Archives: DNA mixtures

Grits for Breakfast: Changes to DNA-mixture software raise questions about old versions

Grits for Breakfast: Changes to DNA-mixture software raise questions about old versions — Read on gritsforbreakfast.blogspot.com/2018/08/changes-to-dna-mixture-software-raise.html

Posted in criminal justice reform, DNA mixtures, DNA profiling, Exoneration costs, forensic science reform protecting the innocent, Uncategorized | Leave a comment

#Forensic News for Today: Fabricated arson evidence, door knobs, familial DNA traits

This case is horrendous. Fabricated arson evidence used against a woman later acquitted of arson gets into court after appellate court opines this rule for the lower court to follow in her lawsuit against LEO authorities. “There must be persuasive … Continue reading

Posted in AAFS, Crime lab scandal, criminal justice reform, CSI, DNA mixtures, DNA profiling | Tagged , , | 1 Comment

Making Sense of DNA Genetics – #AAFS2017 – Epigenetics is mentioned

This is a primer-level (being in a brochure format) look on the subject and has some gaps as far as interpretation of DNA partial profiles and mixtures but admits that, even with algorithmic software, there still is human interpretation in … Continue reading

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When flies besmirch the crime scene, this might avoid DNA mistakes

Interesting look at separating fly DNA from human DNA at a messy crime scene. Hopefully the fly crap can be separated out after the research is completed. There are cases where flyspecks (regurg and poop) are mis-identified as blood spatter and … Continue reading

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Prosecutors started to look at Austin PD DNA analyst 6 years ago

Its better late than never, I guess. Good example on how DA CIUs (conviction integrity units) get a bad rap. This Cleveland DA says some of them are just ‘news releases.’ “During that sexual assault trial, prosecutors wrote two memos … Continue reading

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American Academy of Forensic Sciences asks public for bitemark validation studies

In an equitable move [probably in the face of all the LEO crime labs complaining] requested by the President’s Council of Science and Technology chairman, Eric Lander, the AAFS is asking its membership to provide more information not mentioned in … Continue reading

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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

Originally posted on Forensics Forum:
Authorities have used DNA databases to search for partial matches in order to solve cold cases. The idea is that these partial matches are likely relatives of the suspect and authorities can focus on investigating…

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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

Posted in criminal justice, criminal justice reform, CSI, DNA mixtures | Tagged , , , , , | 1 Comment