Danny_57, 6-4-2012 22:51:
Just think deeper along with your genetic-knowledge ;-)
Just some chickengenetics/mutation explanation that could come close !
Smoky : I^S (Autosomal, both Dominant & recessive).
Changes eumelanin - black to
smoky shade.
One dose visible in chick down- bluish, but two doses needed for adult plumage expression.
Allelic to I (Dominant to I).