Transgene expression in Zebrafish (Danio rerio). Parental effects on transgene methylation (Martin CC, Dev Genet 1995;17:233-
239) have been reported. Although androgenetic zebrafish develop normally suggesting that genes essential for development are
not imprinted (Corley-Smith GE et al, 1996), their development is delayed
and few androgenetic or gynogenetic fish survive to maturity suggesting that imprinting may be involved (McGowan
RA et al, 1997).