Polynesian surprises
The mitochondrial DNA of the inhabitants of Polynesian islands in the Pacific Ocean is more similar to people from South East Asia than to people from South America. This shows that the Polynesians' ancestors probably came from Asia, not South America, as some people once thought. However, studies of Y-chromosome DNA of the inhabitants of Polynesian island Rarotonga reveal that a third of the population have European male ancestors - possibly eighteenth-century sailors.