Fun-Tricky bicolor images. - Page 6

A larger expression of tan on the points, could be creeping tan?  also the reverse mask effect.

"Masking Gene"


 

Pic on first posting of GSD lineage is not a Bi
Look at the under hairs in neck    they are tan or red and all thru legs too appear the double colored hairs..too much red on face
the gsd is a dark black tan/ feet not able to see any thing between or on either front feet????to denote a required marking of black on toes or feet?

Bi may not have any hints of tan or red on nose or face except a dash or dot over eyes..
Penciling on toes or between but if Tan is in face or anywhere else it is not a Bi...

Visit MelloDee at Germelhaus website/facebook   and see Cuzko and his brother Chase..

Those are true Bi. colored Males from MelloDees C litter
her facebook has both dogs pics also

Will find the link and post it later...I am awaiting news on Moore Okla where my deceased  husbands family is so I am up and awaiting something good not aweful..

Will post pic in a few.

YR

https://plus.google.com/photos/101832815644097071043/albums/5662341641582091569/5665305381123407330?banner=pwa&gpsrc=pwrd1#photos/101832815644097071043/albums/5643676727337733937

 
                                                                                                        Cuzko at work when very young (second Pic)    link should be more pics of Cuzko at work...do not know on this computer how to make linkeable..
Go to www.germelhaus.com and many pics of Bi's at work

YR
 

Thank you, YR for showing up and letting us know you're alive and well (hope you're well!)

Yes, those are bicolors. As you stated, tan on face except eye brows, tan behind ears...not a bicolor. 

@Daryl..... If my memory serves me right, the father had similar markings, but not as pronounced. The mother was black with some bleed through on the legs. Good chance he would have carried black. sadly I never saw him growing up. He got hit by a truck while left with a friend as I had to go to a seminar for work. This was right after the wall came down in 1989.

Jenn: All is well.   Cuzko is one tough boy. Got to see him  and Myah in Santa Fe ,tx. Sunday. 
Dave Kroyer is his trainer in Hutto as Cuzko is ALL a 100% total working packaged gsd..

Jerri waited years to finally get a Bi .MelloDee breeds for total well packaged gsd

Cuzko Now
YR

There is nothing called melanistic in dog genetics.
Sable is what collies also come in, the sable people call on GSDs is actually agouti.
The agouti gene consists of
A^y - sable
a^w - agouti
a^t - tan points
a- recessive black.

Saddle pattern dogs are believed to have the gene "tan points" but the points has been modified by an unknown gene so the tan points spreads up, that can form a saddle, in some dogs the saddle can be so faint the tan undercolor shows through, making a "bitch stripe".
"Melanistic black tan" are just pointed dogs with their points spread up slightly, making a faded effect on the legs.
Bi-color dogs are tan pointed dog (like dobermanns), a GSD without any tan on the face has just the tan covered up with a mask, some masks on dogs are bigger than others, tan points can also become very faded so the chest spots are hard to see.
So technically if the theory is true every GSD that has saddle pattern/just minimal color on legs etc are bi-color aka tan points, saddle and creeping tan dogs are born with the usual tan point pattern but the eumelanin retreats as the dog ages.
 

"Melanistic" is merely used as a descriptive to tell someone how dark a black and tan is, not a term pertaining to genetics. 

Melanism IS a legitimate term used in Molecular Genetics.  Recessive variants of agouti cause melanism, which is also induced by dominant mutations in MC1R.