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What judges should know about DNA mixtures

DNA mixtures of multiple people are commonly introduced in criminal trials. The match statistics can include or exclude defendants. But mixture evidence is more subtle than simple DNA from one person.

What are the problems and pitfalls with interpreting DNA mixtures? How can computers overcome human bias and limitations to get more information out of crime lab data? Dr. Mark Perlin spoke to Pennsylvania trial judges this year about "Understanding DNA."

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