[Jacob-list] question on horns

[Jacobflock at aol.com]

In a message dated 4/15/2005 8:40:06 PM Central Standard Time, 
patchworkfibers at alltel.net writes:

> I hope someone else will jump in here on this, as I may be wrong, but I 
> think that since SUED is linked to the polycerate gene, you would most often 
> (but maybe not always) see it on four horned animals.  Does sued occur in 
> hornless and/or polled sheep? 

Split upper eyelid defect is associated with polyceraty and therer are no 
reports I am aware of that hint of such a defect in polled sheep.  As to the 
"hornless" phenotype the question should be placed on the table.  There are 
impediments to answering the question: the observation in the ewe of the sex-linked 
"hornless gene" presented as an aberrant horn and the scur at the lateral horn 
location, the willingness to present such a finding which would suggest other 
questions.

Fred Horak
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