Natural Bobtails in YBMC ????

hey myles, I did a lil lookin and found this. u mite hav seen it too, I don't know, but here is a lil of what I found.
as stated, out of the 23 dogs studied, which there r way more than 23, but maybe 1 of these breeds helped produce the bmc line many, many yrs ago.
A mutation in a gene called the T-box transcription factor T gene (C189G) accounts for natural bobtails in 17 of 23 dog breeds studied, but not in another 6 dog breeds, for which the genetic mechanism is yet to be determined.[2]

Natural bobtail dog breeds with C189G mutation:
Australian Shepherd
Austrian Pinscher
Australian Stumpy Tail Cattle Dog
Braque du Bourbonnais
Brazilian Terrier
Brittany Spaniel
Croatian Sheepdog
Danish Swedish Farmdog
Jack Russell Terrier
Karelian Bear Dog
Mudi
Polish Lowland Sheepdog
Pyrenean Shepherd
Rottweiler
Braque Francais aka Savoy Sheepdog
Schipperke
Spanish Water Dog
Swedish Vallhund
Pembroke Welsh Corgi

Natural bobtail dog breeds without C189G mutation:
Boston Terrier
English Bulldog
King Charles Spaniel
Miniature Schnauzer
Parson Russell Terrier

Dog breeds into which the C189G mutation has been introduced by cross-breeding:
Boxer