Couple 1. Gonadal mosaic for trisomy 21: FISH analysis of embryos from two PGD cycles
| Embryo | Biopsied cells | Cells in remainder of embryo |
|---|---|---|
| Cycle 1 | ||
| 1 | 2 trisomy 21 | 7 trisomy 21: 2 disomy 21 |
| 2 | 2 trisomy 21 | 3 trisomy 21: 1 tetrasomy 21 |
| Cycle 2 | ||
| 3 | 2 normal | Transferred |
| 4 | 2 normal | Transferred |
| 5 | 2 trisomy 21 | 3 trisomy 21: 1 disomy 21: 1 monosomy 21 |
| 6 | Not biopsied | 5 trisomy 21 |
| 7 | Not biopsied | 2 tetraploid (arrested) |