No, its not a blond joke. A new study argues that blond hair and blue eyes evolved among women at the end of the last ice age. From the London Times:
The study argues that blond hair originated in the region because of food shortages 10,000-11,000 years ago. Until then, humans had the dark brown hair and dark eyes that still dominate in the rest of the world. Almost the only sustenance in northern Europe came from roaming herds of mammoths, reindeer, bison and horses. Finding them required long, arduous hunting trips in which numerous males died, leading to a high ratio of surviving women to men.
Lighter hair colours, which started as rare mutations, became popular for breeding and numbers increased dramatically, according to the research, published under the aegis of the University of St Andrews.
Actually, my male line just waited for the taller guys to kill each other off in fights over the blonds. As far as I can tell, this study is based on two solid pieces of evidence. One:
“Human hair and eye colour are unusually diverse in northern and eastern Europe (and their) origin over a short span of evolutionary time indicates some kind of selection,” says the study by Peter Frost, a Canadian anthropologist. Frost adds that the high death rate among male hunters “increased the pressures of sexual selection on early European women, one possible outcome being an unusual complex of colour traits.”
And two:
Frost’s theory is also backed up by a separate scientific analysis of north European genes carried out at three Japanese universities, which has isolated the date of the genetic mutation that resulted in blond hair to about 11,000 years ago.
The hair colour gene MC1R has at least seven variants in Europe and the continent has an unusually wide range of hair and eye shades. In the rest of the world, dark hair and eyes are overwhelmingly dominant.
The bit about male death rates looks like speculation, however reasonable. The study is coming out in Evolution and Human Behavior. Perhaps the most shocking finding is that blonds are about to become a lot more scarce than they are now.
A study by the World Health Organisation found that natural blonds are likely to be extinct within 200 years because there are too few people carrying the blond gene. According to the WHO study, the last natural blond is likely to be born in Finland during 2202.
The last blond. Sounds like a movie for one of Jon Schaff's descendants to review.
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