WINNEMUCCA, Nev. (AP) – Nature triumphed over nurture as two cloned mule brothers came up short in a professional race against traditionally bred runners.

Idaho Gem, the world’s first equine clone, finished third while Idaho Star wound up seventh in an eight-way race Sunday at the 20th annual Winnemucca Mule Races, Show & Draft Horse Challenge.

Idaho Gem covered his 350-yard sprint in 21.246 seconds – two-and-a-half lengths behind the winner, Bar JF Hot Ticket, who finished in 20.866 seconds. Idaho Star checked in at 22.181 seconds.

“I think both animals, especially Idaho Gem, showed they have a lot of upside,” said Don Jacklin, an Idaho man who helped finance the cloning project. “They both proved they could compete.”

The clones, who competed for an $8,500 purse in the finals of their bracket, won their qualifying heats Saturday in what was billed as the first professional competition between clones of any kind.

A crowd of 1,000 people cheered as the mules raced down the stretch of an oval track in Winnemucca, about 160 miles northeast of Reno.

Winnemucca was the first stop on a professional mule racing circuit that will shift to county fairs in California through the summer.

Researchers on the cloning team hailed the clones’ athletic performance and the project’s benefits to human cancer research.

“Their performance is one thing that will make people feel warm and fuzzy about cloning,” said Kenneth White, a Utah State University professor who conducted the cloning.

A mule is the usually sterile offspring of a donkey father and a horse mother. The clones were born three years ago and carry identical DNA taken from a fetus produced by the same parents that sired a champion mule racer.

Wayne Pacelle, president of the Humane Society of the United States, criticized the project.

“There’s no shortage of horses and mules,” Pacelle said. “Why do we have to subject them to the risks associated with cloning? There’s no legitimate purpose for this exercise.”

Saturday in Idaho Gem, the world’s first equine clone, and his brother, Idaho Star, made successful debuts in what scientists billed as the first professional competition between clones of any kind.

In two qualifying heats, two wire-to-wire victories, two nearly identical times. It was almost like the same mule won twice.

Idaho Gem covered his 350-yard sprint Saturday in 21.817 seconds, winning by 1¼ lengths over five rivals. Idaho Star was less than three hundredths of a second faster, finishing in 21.790 seconds to win by a half length over four competitors.