Inflation caused by adding microsatellites. Linkage maps created with (A) only the SNP markers are substantially shorter in length than (B) linkage maps created using both SNP and microsatellite markers when the conventional build method is used. This inflation is exhibited in all four chromosomes. Generally, the microsatellites (highlighted in red) are not distal to the SNP markers so the cause of the inflation is likely to be genotyping error at the microsatellite markers.
Ball et al. BMC Genomics 2010 11:218 doi:10.1186/1471-2164-11-218