Only one to two per cent of the world’s population has red hair but in Scotland the figure is about 13 per cent, or 650,000 people.
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However, the figure could fall dramatically – and even see redheads die out completely in a few centuries – if predictions that the country’s climate is set to become much sunnier are true.
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Dr Alistair Moffat, boss of genetic testing company ScotlandsDNA, said: “We think red hair in Scotland, Ireland and the north of England is adaptation to the climate. We do not get enough sun and have to get all the vitamin D we can.
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“If it was to get less cloudy and there was more sun, there would be fewer people carrying the gene.”
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