Guessing the color of the coat of a gray wolf seems like a no-brainer.
"In most parts of the world black wolves are absent or very rare, yet in North America, they are common in some areas and absent in others,""Scientists have long wondered why. We now have an explanation based on wolf surveys across North America, and modeling motivated by extraordinary data collected by co-authors who work in Yellowstone."
In the case of these wolves, coat color is determined by a gene called CPD103, which historically made their coats gray. However, a CPD103 mutation emerged in dogs and crossed over to wolves, producing a black coat., though, it takes just one copy of the black coat gene to produce a black coat.
They found that wolves with the antibodies were, indeed, more likely to have black coats – especially in older wolves. Black wolves were also more common in areas in which outbreaks had occurred. However, it only works in regions that have experienced canine distemper outbreaks. According to the team's mathematical modeling, the competitive advantage of choosing an opposite color mate disappears if canine distemper isn't a problem.
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