The majority of the genome within somatic cells of individals are heterozygous, however one parental copy of a region can sometimes be lost resulting in the region lacking differences at these polymorphic loci (SNPs) and therefore showing loss of heterozygosity (LOH).
The majority of the genome within somatic cells of individals are heterozygous. One parental copy of a region can sometimes be lost resulting in the region and therefore showing loss of heterozygosity (LOH). This region is lacking differences at these polymorphic loci (SNPs).