Quote:
If pure (homozygous) for there ground-color "unicolor" Blue are E/E Bl/bl+
If pure (homozygous) for there ground-color partridge Blue are eb/eb Bl/bl+
When you cross both you become unpure (heterozygous) for there ground-color E/eb, since "E" is dominant on "eb" these will be on the external (phenotype) "unicolor" => +- 25% Splash, 50% Blue and 25% Black.
The blue parti chicks I'm getting just occasionally show up in the breeders blue and splash pen, about one in a hundred. What if the parti chicks are bred to each other. Also, I am so interested in the eye-line you mentioned to sex partridge. I've never heard of that! Are you speaking of the line by the eye of the partridge chick that was recently posted?
Partridges need to have both alleles of a gene (eb = 1 allel, eb/eb = 2 alleles, so 2 alleles are 1 gene) since "eb" is recessive on "E" you need always both "eb" alleles together to can express on the outside.
If you have only 1 allel "eb" and the other allel is "E" you become the heterozygous gene "E/eb" which express the Dominant allel "E" = Black phenotype (with possible outbreak of gold or Silver, depending on what the chick is based).
Yes exactely, that "eye-line" on that recently posted photo, = female ;-)