Genetics - Can two longcoats produce a short-coated puppy? - Page 1

I am looking at buying a new German Shepherd puppy and just checking whether he is purebred. What startled me is that his mother has a short coat, whereas her parents (as stated in her pedigree and confirmed by her breeder) are both long-coats. Is that possible? Or is the pedigree not genuine? Wikipedia states that the gene for a short coat is dominant to a gene for long coat. Therefore, according to my understanding, two short coated shepherds can produce a long-coated puppy, if both of them carry the recessive genes for long coat, but not vice versa: two long-coated dogs cannot produce a short-coated puppy. Am I right or mistaken?

The exact wording in Wikipedia is:

The L (length) locus

The alleles at the L locus (the fibroblast growth factor-5 gene or FGF5) determine the length of the animal's coat.^[19] There are two known alleles that occur at the L locus:

• L = Short coat
• l = Long coat

L is dominant to l.

 

The answer is no.  Two coats will only produce coats

No.
LL + LL = 4x LL ( only short coat )
Ll + Ll   = LL + 2x Ll + ll ( everything may happen )
LL + Ll  = 2x LL + 2x Ll ( no coats, but carrier Ll ))
LL + ll   = 4x Ll ( all of them carrier )
ll + ll     = 4x ll ( coats )

LL/ Ll  short
ll        long
 

Nature doesn´t work in percentages, though...

Nature doesn´t work in percentages, but with facts.
Two longcoats will never give a short coat.

http://img203.imageshack.us/img203/4895/ellaa.jpg
Thank you a lot for that, that's what I thought.
Now, would you agree with me that the bitch pictured above is short-hair, or is there a coat variety in between of short and long, which some breeders may call "glamour coat"?

That's a standard coat if I ever saw one.  Either her parentage is lied about, or they don't REALLY know who the dad is
 

First off you are starting off on the wrong foot with this breeder or whomever you are asking about can two LC's produce a long coated puppy?  What is wrong with this question?

Nans, have another cup of coffee and re-read the question: can two LONG coats produce a SHORT coat?

So IMO the OP is NOT starting off on the wrong foot with the breeder...the OP is being smart enough to recognize that something isn't on the square in this situation. 

With that said, that doesn't mean the pup the OP is looking at isn't a purebred white GSD...but it does mean that one of the parents of the bitch had to be short-coated.  Is there a picture anywhere of the parents of the bitch you already showed us? Perhaps one of THEM wasn't actually a longcoat, but was a 'plush' or 'glamour' coat?  If both of the alleged parents of the bitch you showed us already are truly longcoats, then you really should report this to the AKC [or whatever registry they're with], because there's been a fraud perpetrated, either accidently or intentionally.

 
Alleged mother 


Alleged father


Alleged daughter (sorry, it is certainly a very unfavourable picture, as opposed to the ones above, but the only one I have)

Question: What exactly is a "glamour" or "plush" coat, and is such a coat allowed in German (or White Swiss) Shepherds?