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Originally Posted by jakort1
Debbie,
I'm sorry but I completely disagree with this explanation. I doubt that there is a gene for white ear, but, what is probably going on is random expression of a pigment gene.
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John you have a lot to learn about the inheritance of markings, including white on the ear. White on the ear is inherited as are marking patterns.
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If you can send me a refereed paper on this I will admit my mistake, but, color (pigment) should and will turn on randomly.
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Do you have any of the old CWCCA Handbooks? Preferably those back in the 80's? Better yet, are you on ShowCardi-L?
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A line would have to be pretty tightly bred, almost clonal in makeup to have identical expression of color placement.
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And a dog with that kind of background is going to imprint those traits on its offspring. I can look at certain heads in Cardigans and tell you that a particular dog is behind them.
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There are just too many factors involved to say that a mismark whether white eye patch, off color ear, etc to be genetic.
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A dog with an over expression of the Irish Spotting Pattern is going to have that as its genetic makeup, and that is what it will be able to pass on to its offspring.
[quote]Also, don't take my disagreement as not respecting your opinion. I very much value your input and our discussions! This is how I am becoming a more informed and responsible pet owner.{/QUOTE]
Thank you for the compliment and I take your disagreement as you just being a tadpole on your way to becoming a frog.
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Oh, and who came up with the term Whitelies and Bluies? I read the Pem standard today and thought I had misread the words.
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I'm not sure to whom to give the credit for those terms. Whitelies, well it is pretty self explanatory.
Bluies, I can tell you why they would be called that - because of the bluish cast the dilute pigmentation causes on the coat, eye and nose leather.
Debbie