Extent of coamplification of testis-specific gene families on X and Y Chromosomes in bull, mouse, and human
| X or Y euchromatin occupied by X–Y coamplified sequence (%) | X–Y coamplified gene families | Total copy number of X–Y coamplified genes | ||||
|---|---|---|---|---|---|---|
| X | Y | X | Y | X | Y | |
| Bull | 2 | 82 | HSFX | HSFY | 11 | 79 |
| Mouse | 8 | 96 | Sstx, Slx, Srsx | Ssty, Sly, Srsy | 64 | 629 |
| Human | 0.06 | 1.65 | HSFX | HSFY | 4 | 2 |
| 0.04 | 0.33 | VCX | VCY | 4 | 2 | |