
OK then, to clarify my thought processes while I was driving home ... unless someone can tell me I'm wrong? Always more than happy to be educated.
I would say that any puppies by Golden x ESS could
ONLY be black, as there would be no recessive fawn/golden/yellow gene to match on the Mum's side. I guess this would work much as a chocolate lab and a yellow lab (neither carrying recessive genes for the other colour) would only produce black puppies?
Of course, without knowing the other father(s), that is not to say that all the black pups are sired by the Golden.
All of this leads to, as far as I can see, two scenarios for the woman selling the pups:
a) she has no idea how many or which dogs have mated her in-season bitch
b) she is not being entirely truthful with you
(Neither would make her someone I wanted to buy a puppy from, but that's just me.)
Anyway, hope all this mumbo jumbo has at least nearly answered your question.
M.
While we're on these conundrums, another one of these is one that Dane breeders have fallen foul of, particularly as black pups are hard to sell - fawn x blue will produce an entire litter of blacks.