[V11/22/07+] Check “Chromosome/Show LOH in Copy” to show uniparental disomy (UPD) in black in inferred copy or log2 view. UPD is defined at the SNPs which have probability (LOH) >= threshold (set at “Options/Prob(LOH) threshold”) and near normal copy number (2 +/− margin, set at "Options/Chromosome/Show LOH at copy 2 +/−". A log2 view example is below: blue: deletion, red: gain, black: UPD, white: normal copy. (Suggested by Jian Huang)