Groupe d’études et de recherche en analyse des décisions

A MCMC method for resolving two person DNA mixtures

James M. Curran

In this talk I will discuss the problem of resolving DNA mixtures from two or more contributors. The procedure is of great interest to the forensic intelligence community, because it can help generate leads in cases which have stalled. I will also describes a Monte Carlo Markov chain method for resolving DNA mixtures containing at most four peaks per locus into a major and a minor contributor. Unlike previous methods, this method can provide posterior probability assessments of the most probable genotype and a likely range for the mixing proportion.