It looks like she can use a Partridge Wyandotte rooster and have sex-linked Wyandottes. Cool!Here is a good explanation of breeding for sex links.
https://www.backyardchickens.com/t/261208/sex-linked-information
As I stated in my post, it was a quote from the reference you gave her. If you read your reference, the poster says it is a way to avoid hatchery strains that have been crossed in ways that would interfere with sex-linking. I certainly wasn't expecting to defend your own source to you, but it seemed the poster was inferring that mis-colored earlobes in the red breeds could indicate other hidden pleiotropic genes or alleles, since unknown cross-breeding would almost certainly bring in other recessive genes you couldn't predict based on the genetics of pure strains. But since you are the one who actually posted the source for her, maybe you can now provide the journal reference?What specifically is the significance and value of the red earlobe in the breeding of Cinnamon Queens? If this is an opinion, upon what is the basis for it? Is this maybe some sort of pleiotrophic indicator? If so, what is the connection please? In pleiotropism there are usually two or more phenotypic effects connected with a single gene. You know what I mean, evidence for the statement and connection. If such exists, a reference in a journal would be helpful, to be sure. One sure hears some interesting assertions in a forum such as this. Love these chicken fanciers!
Neal, the Zooman

But I found this (start at page 475): http://www.genetics.org/content/13/6/470.full.pdf
Sorry, it's just cracking me up that you posted it and told her the person was very knowledgeable, but when I quoted the specific portion of it you chuckle at my silliness
