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Genotyping the Fanconi anemia complementation group A promoter polymorphism by polymerase chain reaction. Allele 0 amplifies as a band of 151 bp and allele 1 as a band of 164 bp. All 3 genotypes are readily distinguishable on a 3% agarose gel run at 100 V for 1 h. Lane 1, ladder; lane 2, estrogen receptor 1 exon 4 gene, positive control; lanes 3,4,7 and 8, 00 homozygote; lane 5, 01 heterozygote; and lane 6, 11 homozygote. bp, base pairs.
