Founded in 1970, OBI GmbH & Co. Deutschland KG is the second largest DIY retailer in Europe, and the fourth largest in the world, behind The Home Depot, Lowe's and Kingfisher plc. It is headquartered in Wermelskirchen, Germany, and belongs to the Tengelmann Group.
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One of the most interesting facts about color blindness is about inheritance of the disorder. Color blindness is one of the genetic disorders in humans. As the most common form of this deficiency is related to X chromosome or color blindness chromosome, color blindness tends to be more common in males than in females. But color blindness genetics also suggest that even though women are not color blind themselves, they are very active carriers of color blindness. Interestingly, a mother is bound to pass her red-green color blindness to all her sons, but its less likely for the father to do the same.