Does anyone have a link to the copper and non-copper genetics in Marans? I just finished reading through these 27 pages, and at first I was getting the impression that the copper gene was dominant to the non-copper gene. But this post seems to be saying that the copper gene will lay hidden, and is therefore recessive?
And then some are saying that once a non-copper and a copper are crossed, you can never breed the copper back out. Any gene can be selected away from. Admittedly though, if it is recessive, it will be difficult to make sure you have successfully gotten rid of it. The key lays in whether it is a recessive or a dominant gene.
In any case, I find this all fascinating, even though I will probably never be able to acquire a solid Marans since they are so rare. But by posting my question, at least I will now be subscribed to the thread.