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Thanks, Henk!

Quote: Are you getting that from the "columbian restricted" comments? It doesn;t mean that there is no columbian, it is a way of saying what columbian does--restrict black pigment from most of the bird.

Quote: charcoal in the calculator is recessive. Since the original list did not use the + signs... Don't know if charcoal is in there, could be, but not the most important. Delawares are silver in groundcolor columbian restricted sexlinked-barred/cuckoo on a permissive "extension"...

Quote: So then are you saying there are no such things as mutations? I'm not saying there are I'm just wondering if they've changed the definition of a "sport" and proven there are no such things as mutants. Cuz I could swear my sister in law.................................... sorry. Seems...

Quote: You are correct--and don't discount the knowledge you have in genetics--you do just fine.

Quote: Columbian restricts black pigment by pushing it to the extremities of the bird. Red pigment is extended into the areas where black was removed. The silver gene dilutes red pigment to white. Charcoal puts black back into the hackle. Barring removes bars of colour from the...

Perhaps I didn't explain quite what I meant. Let's say you have a line of black birds that have been bred for quite a few generations, producing 100% blacks, then after one hatching you look into the incubator and see a lavender or a white chick. We now know enough about genetics that we can...

Sport can be used with several different meanings. Usually it is when an unexpected outcome is produced from a known mating. It can be a true mutation, but is far more likely to be the result of two recessives genes pairing up--recessive genes can hide for generations.

Quote: Every chicken has every gene. However, it is the specific alternative form of each gene that determines the differences. Some varieties need dark brown; for others they need to NOT have it (or to state it another way, they need the "not-dark-brown" variation). Generally the genotype...

Quote: The Delaware was not crossed with the Cornish, what that artcle means is that Delaware's were the top choice for meat birds until the Cornish was developed. At that point, the Cornish was used as meat birds instead of the Delaware. And Ridgerunner: thanks for the imput any...