Opal is a very simple Recessive gene, despite the simplicity it has never really been popular, at least in the UK, it's difficult to acquire, although it is increasing in popularity and availability. [1][2]
Opal |
dd |
References
[1] http://www.aaahamsters.org/Opals.html
[2] Logsdail, C., Hovers, K. and Logsdail, P. (2003). Hamsterlopaedia. Lydney: Ringpress, p.157
[2] Logsdail, C., Hovers, K. and Logsdail, P. (2003). Hamsterlopaedia. Lydney: Ringpress, p.157