1. Introduction
1.1 Scope of review
This review will traverse what we know about DNA transfer and the associated elements of DNA persistence, prevalence, and recovery, sometimes collectively referred to as DNA-TPPR
. It will consider the factors impacting transfer during different types of contact and the likelihood of detecting DNA from a sample of interest following a particular sequence of events. It will not, however, collate all the data available to provide probability estimates for specific observations in certain
circumstances. Furthermore, it is not our intention to analyze the abundance of case where indirect transfer has been a major issue, or the different types of scenarios that have been presented in court deliberations. This is therefore not a definitive account of all matters and information relating to the transfer of DNA within the forensic context. Instead, this review provides a snap-shot of the current
knowledge, along with pointers to areas requiring improvements and a brief discussion on our readiness to utilize the available data to help address activity level inquiries. Activity level refers to the generally accepted hierarchy of propositions for evaluation of evidence in forensic science. We refer to this as 'activity level reporting' or 'activity level assessments' for legibility.
No comments:
Post a Comment