Fig. 4　B allele frequency plots from SNP array data for hydatidiform moles. Chromosome constitutions and corresponding B allele frequencies are shown for: (A) an androgenetic homozygous complete hydatidiform mole; (B) an androgenetic heterozygous complete hydatidiform mole; (C) a diandric monogynic triploid partial hydatidiform mole; and (D) biparental diploid non-molar villi. (Figure 4 was adapted from reference No. 23 by Usui et al., 2019.). CHM, complete hydatidiform mole; PHM, partial hydatidiform mole; BAF, B allele frequency