Table 1.
Origin and phenotype of the juvenile lethal piebald (Ednrb) alleles
| Alleles | Mutagen | Treated germ cell stage | Homozygous phenotype
|
|
|---|---|---|---|---|
| Viability | White spotting, % | |||
| Ednrbs | Spontaneous | Viable | 10–20 | |
| Ednrbs-l | Spontaneous | Juvenile lethal | >90 | |
| Ednrb17FrS | Radiation (γ rays) | Stem cell spermatogonia | Juvenile lethal | >90 |
| Ednrb3Chlo | Chlorambucil | Early spermatids | Juvenile lethal | >90 |
| Ednrb1Chlc | Chlorambucil | Early spermatids | Juvenile lethal | >90 |
| Ednrb27Pub | 239Pu-citrate (α-rays) | Stem cell spermatogonia | Juvenile lethal | >90 |