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Positional Distribution of Single Recombination Events for Meiotic I and Meiotic II Derived Trisomy 21 Among Mothers of Different Age Groups
| |
No. of cases with one recombination stratified by chromosomal intervals |
|||||
|---|---|---|---|---|---|---|
| Stage of error | Maternal age group | Sample size | Mean maternal age (years±SD) | Proximal | Medial | Distal |
| MI | Young (<35) | 10 | 27.75±4.51 | 0 | 3 | 7 |
| Older (≥35) | 5 | 37.75±1.70 | 0 | 3 | 2 | |
| MII | Young (<35) | 5 | 31.22±2.90 | 5 | 0 | 0 |
| Older (≥35) | 4 | 39.75±2.75 | 4 | 0 | 0 | |
