Table 3.
Inheritance of sex chromosomes in the pups developed from the reconstructed oocytes carrying the nuclei from XY oocytes
| Phenotype | Female | Male | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Nuclear transfer at the GV-stage (GV-NT) | |||||||||
| Karyotype | XO | XX | XY | XXY | XYY | ND* | |||
| Maternal | O | X | X | XY | XY | YY | Y + ? | ||
| Paternal | X | X | Y | X | Y | X | X | ||
| No. of pups | 1 | 2 | 3 | 2 | 3 | 1 | 1 | ||
| Sex ratio | 23% | 77% | |||||||
| Nuclear transfer at the MII-stage (MII-NT) | |||||||||
| Karyotype | XY | XXY | XYY | ||||||
| Maternal | X | XY | XY | ||||||
| Paternal | Y | X | Y | ||||||
| No. of pups | 0 | 1 | 3 | 1 | |||||
| Sex ratio | 0% | 100% | |||||||
*One male pup died soon after birth, and therefore, its karyotype was not determined. The Zfy polymorphism indicated the presence of only the YTIR-chromosome in this pup.