 Just trying to understand...
Recessive genes, mutations, and how variations work I understand so I don't need explanation on these.
From what I've read genetic testing has been done to prove that Biewers are there own breed of dog. Right?
And parti yorkies, and this is just a theory, could have resulted from a genetic mutation that resulted in the recessive lighter color gene. Or was the recessive gene always there? Did breeders just breed against this coloration favoring the dominant color we've all come to know?
__________________ Littlest JakJak 
We miss you Kaji 
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