Parameters | Genetics | All markers are biallelic

All markers are biallelic
Check this box if all markers are biallelic (SNPs) and use the same values to represent the two alleles.
If this option is selected and several other conditions are met (no By Variables or Strata Variables selected, Apply VIF for genomic control option unchecked, Marker Variables contain genotypes, only one trait variable is selected), then a faster algorithm for calculating the association tests can be used.
To Specify This Option: