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Police might soon be able to tell the eye colour of criminals from DNA recovered from crime scenes, thanks to a new genetic study.
A team of scientists led by Manfred Kayser, of Erasmus University Medical Centre in Rotterdam, has developed a method that predicts eye colour with unprecedented accuracy.
The method could also be used on ancient DNA to profile early modern humans or even Neanderthals.
And as eye colour is determined by many genes, the work also raises hopes for predictive genetic tests for diseases that are influenced by numerous genes, such as heart disease.
Kayser's team looked at DNA from more than 6,000, Dutch Europeans from Rotterdam.
About 68% of these people had blue eyes, whereas around 23% had brown eyes.
The researchers focused on eight genes known to be associated with eye colour.
These genes code for proteins involved in the production or distribution of the iris, skin, and the hair pigments eumelanin and pheomelanin.
The strongest effect on eye colour is determined by two adjacent genes, OCA2 and HERC2, on chromosome 15, but these don't paint the full picture.
Kayser's team zeroed in on 37 sites of genetic variation in the eight genes.
These sites — called single nucleotide polymorphisms (SNPs) — are points where one of the four letters in the DNA code of chemical bases is substituted for another.
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お礼
やっぱりそうですか。 私は幅広くは聴いてませんので、ひょっとしてと思ったんですが。 まあ、奇跡を願ってもう少し開けておきます(笑) ご回答ありがとうございました。