You are describing one versus two copies of an incompletely dominant gene; I'm referring to separate genes that interact, regardless of whether there is one or two copies of either--just that there are sufficient copies for the gene to "work."
It seems to be a common idea that breeding two different colours of something, in this case chickens, may lead to the intermediate colour. Like mixing paint. In reality there are very few instances where the actual results from breeding two different colours together will lead to an intermediate colour. Breeding black to splash is one.
It seems to be a common idea that breeding two different colours of something, in this case chickens, may lead to the intermediate colour. Like mixing paint. In reality there are very few instances where the actual results from breeding two different colours together will lead to an intermediate colour. Breeding black to splash is one.