Dinucleotide repeat polymorphisms at the DXS453, DXS454 and DXS458 loci

Frequency: Mfd66: Estimated from 87 chromosomes of unrelated CEPH family grandparents (Caucasians). PIC = 0.63. Allele (bp) Frequency Allele (bp) Frequency 170 0.21 164 0.01 168 0.48 160 0.12 166 0.18 Mfd72: Estimated from 73 chromosomes of unrelated CEPH family grandparents (Caucasians). PIC = 0.59. Allele (bp) Frequency Allele (bp) Frequency 152 0.07 146 0.49 148 0.16 144 0.27 Mfd79: Estimated from 103 chromosomes of unrelated CEPH family grandparents (Caucasians). PIC = 0.62. Allele (bp) Frequency Allele (bp) Frequency 190 0.05 182 0.08 188 0.52 180 0.13 186 0.20 178 0.01 184 0.01 Chromosomal Localization: Mfd66 was provisionally assigned to Xpl 1.23-q21.1, and Mfd72 and Mfd79 were both provisionally asigned to Xq21. 1-q23 using DNA templates isolated from panels of chromosomal and subchromosomal somatic cell hybrids (1, 2).