🧪 Letter from Approximately 25 Scientists on DNA Statistical Assumptions (Defendant's 1145 / Defense 1145)
◀ Home ◀ Evidence ◀ Dna Mixture Statistics
Address:
C:\DEPT103\EVIDENCE\DNA_MIXTURE_STATISTICS\DNA_MIXTURE_STATISTICS--LETTER-FROM-25-SCIENTISTS-CHALLENGING-DNA-STATISTICAL-ASSUMPTION
🧪 Forensic in Dna Mixture Statistics

Letter from Approximately 25 Scientists on DNA Statistical Assumptions (Defendant's 1145 / Defense 1145)

A five-page letter associated with approximately 25 scientists in statistics and population genetics concerning independence assumptions and the product-rule controversy in forensic DNA frequency calculations. Described as a rejected submission to Nature, it was marked Defendant's 1145 and Defense 1145; attempts to use it substantively during cross-examination were limited or blocked.

Exhibit labels

How this item was marked across the four trials. The same physical item often gets different numbers in the criminal and civil trials.

Defendant's 1145Defense 1145

Source proceedings (3)

Every proceeding where this item was discussed. Click through to the transcript.

Criminal trial (3)

More in Dna Mixture Statistics

1992 NRC report “DNA Technology in Forensic Science”
The 1992 National Research Council report “DNA Technology in Forensic Science,” cited by both sides concerning mixed-stain statistics, the ceiling principle and product rule, PCR contamination, laboratory error rates, accreditation, and proficiency testing. …
People's 260 — Bronco DNA Results and Frequency Board
People's 260, a board presenting PCR typing results for Bronco samples, including DQ-Alpha and D1S80 results for steering-wheel and console items. Covers and corrected number patches were used during testimony, and the board was later annotated with populati…
Dr. Weir's June 21, 1995 Expert Report on DNA Frequencies
Dr. Bruce Weir's report dated June 21, 1995 comprised 48 pages plus a cover and addressed single-stain and mixture frequency calculations for Cellmark and California DOJ results. It was received without objection for purposes of the hearing as People's 408, …
Rockingham DNA results and frequency board (People's 261)
People's 261, the Rockingham DNA-results posterboard, displayed typing results for Rockingham samples and PCR reference results for OJ Simpson, Nicole Brown, and Ronald Goldman. Dr. Robin Cotton and Gary Sims annotated its frequency columns with PCR and RFLP…
Prosecution Mixture Frequency Ratios Chart (People's 410)
A prosecution chart displaying frequency ratios for a mixed DNA stain, displayed on the ELMO projector during Dr. Shields's criminal trial testimony.
Defendant's 1201 — Cellmark DQ-Alpha Frequency Tables
Cellmark DQ-Alpha genotype-frequency tables for Caucasian, African American, and Hispanic population databases, introduced as Defendant's 1201 and used as reference material and for NRC-method calculations during Dr. Bruce Weir's cross-examination.
Civil Trial Weir Mixture Frequency Summary Table (2231)
Dr. Bruce Weir's 'Summary of Mixture Frequencies' document, providing statistical frequency calculations for mixed DNA stains from items 31, 303, 304, and 305 in the civil trial. The most recent version, generated the morning before Weir's testimony, was mar…
Bundy DNA Frequency Statistics Board (Defendant's/Defense 259)
A board or chart displaying DNA typing results and population frequency estimates for Bundy walkway blood drop items 47 through 52. Used by the defense during Robin Cotton's cross-examination and referenced again during Dr. Gerdes's testimony.
about • glossary • search • privacy • terms •
3 procs · 3 people
The Simpson Matter
Department 103
🔬 Letter from Approximately 25 Scientists on DNA Statistical Assumptions (Defendant's 1145 / Defense 1145)
EVIDENCE
Court Daemon Network
Dan Markel Archive Four trials in the Dan Markel murder case — Garcia–Magbanua, the Magbanua retrial, Charlie Adelson, and Donna Adelson. Alex Murdaugh The complete certified 2023 murder-trial transcript, searchable and synced to courtroom video. Elizabeth Holmes The native federal court-reporter record of the 2021 criminal fraud trial. Luigi Mangione The case as it stands: timeline, court dates, and documents. Commonwealth v. Read Both Karen Read murder trials, searchable and synced to video. Depp v. Heard The 2022 defamation trial, from court reporter transcripts.
Court Daemon Explore the full trial archive network. Trice Digital The studio behind the archives.