Many skeptical Yorkie owners and breeders, absolutely refuse to believe that
the parti, chocolate, Merle, blond and golden colored Yorkie is anything other than
a recent "behind the kennel bred" mutt.
They say: "The only color that Yorkie's come in is blue and tan" or
"There is NO record of any Yorkie ever breeding to a white, parti,
chocolateor golden colored dog."
This article will try to educate you about color genetics, recessive genes and how these unique
colors remained hidden in the Yorkshire terrier breed for years.

We know from our Yorkie history, that early records were not kept on
the foundation breeding stock.
I seriously doubt, that back in the days where spaying and neutering was not done,
that the farmers and working class families didn't have the "occasional"
unplanned pregnancy in their canines.
If anything, it happened more then, than it does today.  

It's documented in some of the earliest records that the foundation stock of our breed,
were cross-bred dogs and dogs without pedigrees (who's heritage is unknown).
Even if these dogs didn't look parti, chocolate, blond or golden colored
they could very well have harbored the recessive genes in their DNA makeup.
Whether their mother/father, grandmother/grandfather or great grandmother/great grandfather
was parti, chocolate or golden colored,
no one would really know, since record keeping at that time in history, was little to none.

The parti, chocolate and gold gene can only be expressed if
a dog who carries one copy of that particular recessive gene (known as a carrier) is bred to
another dog who also carries that same recessive gene.
A carrier will look like a traditional colored Yorkie,
parti carriers may have some white markings on their chest and feet but otherwise,
the carriers will look likea black and tan yorkie puppy.  
When a carrier is bred to another carrier, 25% of the offspring
will be traditional yorkies - (not carrying the gene),
50% will be traditional colored yorkies who do carry the recessive gene
and 25% of the offspring will be actual parti,
chocolate or golden colored yorkies -
these dogs carry 2 recessive genes, one from their mother and one from their father.  
It's only been approximately 5 years since AKC has allowed
these beautiful colored yorkies to be eligible for registration.
Prior to that time, parti, chocolate and golden colored offspring were normally kept quiet,
given away without papers or destroyed .
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