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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