Fig. 5　Determination of parental origin of additional chromosomes of androgenetic heterozygous complete hydatidiform moles. (A) Upper chart: chromosomes 6 and 7 showing diploidy and trisomy, respectively. Lower chart: BB regions are present on chromosome 6, but not on chromosome 7, indicating that chromosome 6 is androgenetic diploid and chromosome 7 is diandric monogyny triploid. (B) Upper chart: chromosomes 2 and 3 showing diploidy and trisomy, respectively. Lower chart: BB regions are present on both chromosomes 2 and 3, which indicates that chromosome 2 was androgenetic diploid, and that three chromosomes of chromosome 3 were all of paternal origin. (Figure 5 was adapted from reference No. 21 by Usui et al., 2020.)