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Principles of Forensic DNA for Officers of the Court

Estimating STR Profile Frequencies - Population Groups

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National Institute of Justice (NIJ) (see reuse policy).

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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