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Domestic dogs come in a stunning uniformity of shapes and sizes, and emirate breeds wear different coats. They can have short hair or long hair, or fur that’s uneven , wavy, curly, wiry or smooth. To find the genes satiable for this furry rainbow, scientists scanned the DNA of a outed individual dogs from 80 different breeds. And they found that every coat’s appearance boils down to three simple traits: length, line  and texture. And that each of these traits is agitated by just one gene. So, a long-haired Golden monitor has one variant of a gene called FGF5, whereas a short-haired lab has another.

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