One in a Million, Part 1

Genetic testing has shown Dunbars Gold, a 1996 brindle Quarter Horse stallion, to be an extremely rare chimera, an individual with two DNA types. Of the more than 4.7 million American Quarter Horses registered with AQHA (excluding appendix horses), the registration department has a list of only 15 horses who have exhibited some form of the brindle coat pattern.
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An incredible genetic circumstance creates a unique DNA puzzle.

"Excluded."

For the second time Denise Charpilloz had sent in hair from her 2004 foal out of her mare Sharp One for DNA testing and parentage verification. And for the second time, the Veterinary Genetics Laboratory at the University of California, Davis, had excluded not only the stallion Dunbars Gold as the foal's sire, but also Sharp One as the foal's dam.

Dunbars Gold, a 1996 brindle Quarter Horse stallion and a chimera

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