Figure 8.

(A) Schematic representation of procedure used for ³²P labeling and isolation of single-stranded PCR products. (B) Hybridization of the same array of six probes shown in Figure 7 to single-stranded 235 nt PCR products generated from female or male human genomic DNAs (X and XY, respectively) as well as to 132 nt product representing pure male copy of amelogenin gene fragment (Y). PCR product generated from the heterozygous male DNA sample shows an equimolar mixture of female and male copies of the gene fragment.