Microsatellite DNA analysis in a boy with ring chromosome 18
| Locus | Genotypes | ||
|---|---|---|---|
| Proband | Father | Mother | |
| D18S54 | 2/22 | 22 | 12 |
| D18S63 | 34 | 13 | 24 |
| D18S62 | 23 | 24 | 13 |
| D18S53 | 23 | 13 | 23 |
| D18S67 | 1/11 | 11 | 11 |
| D18S64 | 1/11 | 11 | 11 |
| D18S61 | 2/22 | 23 | 12 |
| D18S58 | 3 | 14 | 23 |
| D18S554 | 2 | 13 | 24 |
| D18S70 | 3 | 12 | 23 |
The loci on chromosome 18 are ordered corresponding to their relative order based on linkage analysis.3 The numbers in the genotype columns represent the different alleles at a specific locus.