Danny_57, 17-8-2012 10:00:I have a few questions for the biologist specialists on this charcoal gene ! - is this gene Dominant or recessive or are there 2 variants ? - is charcoal working sex-influenced (as Ml is) ? - on what part of the body does charcoal work (head alone as in white Uilebaard with black heads, I intend upper hackle alone) ? - when also the neck-feathers are black (Complete hackle as in Lakenvelder) is that because charcoal work in association with "Co" ?