Decades-long mystery of ginger cats revealed - BBC

1. Decades-long mystery of ginger cats revealed  BBC
2. Mystery of Orange Cats Finally Solved—They're Mutants  Scientific American
3. Why are some cats orange? Stanford scientists solve century-old mystery  San Francisco Chronicle
4. What gene makes orange cats orange? Scientists figured it out  Science News
5. After 100 Years, Scientists Finally Find The Genetic Mutation That Makes Cats Orange  IFLScience