University of Michigan Center for Statistical 


GRR: graphical representation of relationship errors.

Abecasis GR, Cherny SS, Cookson WO and Cardon LR

Bioinformatics (2001) 17:742-3

Summary: A graphical tool for verifying assumed relationships between individuals in genetic studies is described. GRR can detect many common errors using genotypes from many markers. Availability: GRR is available at Contact:;




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