University of Michigan Center for Statistical 


GRR - Tour | Next

Before starting this tour, you should have installed GRR on your system.  Please click here to go to the download page if you need to obtain the latest version.

This tour will take you through the main features of GRR - you will learn how to examine a pre-makeped or Merlin-style pedigree file for errors in relationship specification. You will use the file sample.ped, which contains data on 1300 individuals from 200 families who have been genotyped on 320 markers across the genome.:

File Description
sample.ped A sample genome scan pedigree file.

The files include simulated data and have no real significance. Let's start!


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