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Principles of Forensic DNA for Officers of the Court

Estimating STR Profile Frequencies - Population Groups

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Aerial photo of large group of people, with a magnifying glass over one man in the crowd
National Institute of Justice (NIJ) (ver política de reutilización).

Laboratories typically provide STR profile frequency estimates in three to four population groups. The reason for this is to provide a range of estimates from which to conclude the significance of matching DNA profiles.

For a discussion of the use of multiple population group statistical evidence, see People v. Wilson (11/16/04) Cal. Ct. App., A101459, 2004 Cal. App. Lexis 1918; People v. Pizarro Cal. App. 110 Cal. App. 4th 530 (2003).

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