The phantom or cryptic Merle, looks like a solid dog, but
possesses the merle allele just like a regular merle. The phantom
merle may only have a few merle hairs, and appear in all other ways
to be a solid dog, but the phantom will breed just like any other
merle dog, producing 50% merle, 50% solid, puppies, from solid mates,
and 50% Merle, 25% Solid, and 25% homozygous Merle (double merle -
White - defective) puppies, from Merle mates.
It is interesting to note that on of the more famous Aussies, in
history was a phantom merle.
(Soda's merle is on the right,[face, neck, &
elbow]).
(Fieldmaster's is on the top of his head).
CH. Hall's Fieldmaster Of Flintridge

akc/asca CH. Southern Cross Back To The Past CD
He is not unlike our very own "Soda" - Having only a small Merle
spot on his head.
In fact, according to relieable sorces, CH.Fieldmaster Of
Flintridge even had 2 litters of puppies culled because the breeders
were certin he was not the sire, because the dam was a solid black,
and the sire (CH.Fieldmaster Of Flintridge) was thought to be black
also. The third litter the dam was kept close to the breeder the
entire time she was in season, so they could be certain of the sire
of the puppies.
We hope you understand a little more about the phantom merle, (
which can also come in Red), and we hope you have enjoyed this little
bit of aussie lore.