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Match Probabilities for Multiple Siblings

NCJ Number
239565
Journal
Forensic Science International: Genetics Volume: 6 Issue: 4 Dated: July 2012 Pages: 466-468
Author(s)
K. Slooten
Date Published
July 2012
Length
3 pages
Annotation
This research examined DNA match probabilities among related individuals.
Abstract
A defendant whose DNA profile matches that of a crime stain may argue that he has several, say n, brothers and that one of them may have been the origin of the crime stain. If the probability for any of the brothers considered separately to match the crime stain profile is p, the research shows that the probability that at least one of the n brothers match is strictly smaller than np. This latter quantity therefore is an easy to compute and conservative value to report. (Published Abstract)