Can two LONG COAT's produce short coat puppies - Page 2

No !
Longcoat and longcoat produces allways longcoat...... not possible to get a stockhair ot of that breeding....... but sometimes the outcoming puppies have just less hair ....looking like an stockhair with just some hair in the ears and on the legs........ but if you do a genetic test on them you will find out that they are still longhair ;-)

yes I agree Terry 1 long coat and long coat will produce only long coat, same as black and black GSD always produces black puppies! As black is recessive gene, not so in other breeds like Labrador, black and black can produce yellow!! But in german shepherd black and black only gives black and long coat and long coat only gives long coat! And two sables can only produce a black pup if both parents have the black gene.

Black and black will allways produce black puppies........ but nowerdays we have "black" showlines who also produce black and tan puppies even both parents are black............that never happens with working line black and black........
this black showline dogs go back to a country where breeding is not as controlled as in germany ...........

it would be like producing non-blacks out of two (a) blacks. it does not happen unless in the .00000000% chance of a mutation kicks in.

Sorry Terry1, I have one solid black, long haired, working line female, crossed with someone else's black long haired working line male. In their first litter, in 2016, they had one puppy that is blanketed black. Litter of 9, NO possibility of a different male. Every other litter they had, another 3, all puppies where solid black.

The Dominant black show line you are talking about, so far they have tracked to Goya, a Russian bred show line female.   https://www.pedigreedatabase.com/german_shepherd_dog/dog.html?id=522398-goya?_v=20120110195534

 

MF-

It was a fluke then. Some issue not related to coat color genetics. There are countless breeding supporting black in GSDs as recessive.
This is HS Mendelian genetics.

aa X aa= all aa offspring.

A puppy can not inherit an allele that neither parent had.