DNA profile interpretation has benefited from recent improvements that use semi-continuous or fully continuous methods to interpret information within an electropherogram. These methods are likelihood-ratio-based and currently require that a number of contributors be assigned prior to analysis. Often there is ambiguity in the choice of number of contributors, and an analyst is left with the task of determining what they believe to be the most probable number. The choice can be particularly important when the difference between two possible contributor numbers means the difference between excluding a person of interest as being a possible contributor, and producing a statistic that favors their inclusion. Presenting both options in a court of law places the decision with the court. (Publisher abstract modified)
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