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Evidence Commons

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Penn State Law

DNA Evidence

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Full-Text Articles in Evidence

Dna Evidence: Probability, Population Genetics, And The Courts, David H. Kaye Jan 1993

Dna Evidence: Probability, Population Genetics, And The Courts, David H. Kaye

Journal Articles

To help meet the challenge of presenting properly performed DNA tests within the post-Daubert legal framework, this article outlines the statistical procedures that have been employed or proposed to provide judges and juries with quantitative measures of probative value, describes more fully how the courts have dealt with these procedures, and evaluates the opinions and the statistical analyses from the standpoint of the law of evidence.

Specifically, the article outlines the procedure used to declare whether two samples of DNA "match," and how shrinking the size of the "match window," as some defendants have urged, will decrease the risk of …


The Admissibility Of Dna Evidence, David H. Kaye Jan 1991

The Admissibility Of Dna Evidence, David H. Kaye

Journal Articles

In contrast to the widespread acceptance of red blood cell grouping, blood serum protein and enzyme analysis, and HLA typing, the evidentiary status of forensic applications of recombinant-DNA technology is in flux. A proper evidentiary analysis must attend to the fact that there is no single method of DNA typing. As with the more established genetic tests, the probative value of the laboratory findings depends both on the procedure employed and the genetic characteristics that are discerned. This paper describes some of these procedures and the theory that lies behind them, and then considers the developing case law. Given the …