What happens when you cross 2 white german shepherds?

[truly yours]: Go STUDY that genetics manual. What you describe can’t happen – but the opposite can. It’s the same as with hair. One of my grandmothers was a blonde. Her children were all brunettes, thanks to Granddad. But one of their daughters produced “carrot tops” to her Irish husband, the other daughter’s son produced a blonde to a bride who was a brunette but as a baby had “moulted” through blonde & red-head.
And self-white mating pairs can produce ONLY self-white progeny.

No, [Ashley], if both parents are self-whites the grandparents are irrelevant to the litter’s coat-colour. Because both pairs of alleles needed for the absence of hair-pigment (without also de-pigmenting the skin the way the Spotting series’ recessive alleles do) are recessives, grandparents become important only to indicate whether non-white parents are carriers.

[Jordan] has it backwards. The 2 pairs of recessives aren’t FOR white; they are for BLOCKING pigment. The e^ e^ pairing that blocks eumelanin (dark pigment) is very efficient. The other pairing, that blocks phaeomelanin (tan pigment), is less efficient, often allowing “badger patches”. The hairs on a white dog or person are not actually white, they are transparent, allowing all areas of the spectrum to be reflected and refracted. To prove it, place some “white” hairs side-by-side on a printed page and examine under a strong light & magnifier – the print colours will be seen THROUGH those hairs

[lee]:
You get bitten in 2 places at once? It’s not a good idea to “cross” a GSD, let alone TWO of them at once! VBG

Assuming that your “german shepherd” mispunctuation & abbreviation actually means members of the German Shepherd Dog breed, you get either no pups, or every pup a self-white GSD.

It is MIGHTY rare for a fancier of white GSDs to cross to a non-white GSD.
For a white GSD to be re-registered as a Berger Blanc Suisse by the Swiss KC, it must have ONLY registered-as-white GSDs in the closest 6 generations. I don’t know what other FCI members are doing, but in Australia and Germany no white GSD can be registered as a GSD, and nor can it be registered as a BBS there or in NZ even if it arrives with The KC(UK) or CKC or AKC registration showing 6 generations of only-whites. Note: The official KCs of those last 3 nations are not members of the FCI, so won’t recognise the BBS – but they cheerfully register as GSDs the off-colours, weak characters, etc etc.

But when a white GSD IS mated to a non-white, there will be no white pups UNLESS the non-white parent is a carrier, in which case you get about 1 in 4 pups being a self-white. But you will have VERY indifferent quality in such litters, as no-one with a Breed Surveyed GSD will allow an unsurveyable pooch to be mated to it. And pooches that CAN’T pass a Breed Survey are unworthy of the proud designation “GSD”.
However, all such pups will be carriers for both types of recessive allele. AND are almost certain to possess various undesirable genes that cause black loss or colour-paling (because fanciers of white collect them to reduce the effect of “badger patches”), so that either their black area reduces to almost nothing by 2½ years old, or the tan fades to palest cream/fawn, or both happen.

• Add http://pets.groups.yahoo.com/group/The_GSD_Source to your browser’s Bookmarks or Favorites so that you can easily look up such as feeding, vaccinations, worming, clubs, weights, teething, neutering, disorders, genetics.
• To ask about GSDs, join some of the 400+ YahooGroups dedicated to various aspects of living with GSDs. Each group’s Home page tells you which aspects they like to discuss, and how active they are. Unlike YA, they are set up so that you can have an ongoing discussion with follow-up questions for clarification. Most allow you to include photos.
Les P, owner of GSD_Friendly: http://pets.groups.yahoo.com/group/GSD_Friendly
“In GSDs” as of 1967

They should be sterilized, not bred. A white GSD is disqualified from competing in any AKC conformation. A white GSD is “undesirable” according to the GSD Club of America. It is possible that the genetic twist which created a white GSD would create worse genetic deformities if paired with another white GSD.

“Jordan” is correct. It is simple genetics. Just as a male and female human can both have green eyes and end up with a child that has brown eyes, two white german shepherds can have pups that are all white or not depending on the decent. I have a white german shepherd whose mom was a red shepherd and dad was black and tan. she is purebred and i do have papers. In other words, it is impossible to know exactly what would happen if you crossed them. However, i THINK there is a genetic test where they can view the genetics of both and tell you the percentage of chance you would have of getting a white shepherd based specifically on your dogs. I understand not wanting to cross them though. Good luck with whatever you decide. Hope this helped a little.

they somehow manage to get dumber..why ask if your Not, NOT going too?