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What do blind cavefish, dinosaurs, and sunburnt humans have in common? A lot more than you may realise, according to a thought-provoking new study.
New research published today in Current Biology shows that Somalian blind cavefish (Phreatichthys andruzzii) are missing an ancient DNA repair kit that protects many animals from the harmful effects of sunlight. This observation makes total sense, given that this cave-dwelling species has lived, and subsequently evolved, for millions of years in complete darkness. The lost system, called photoreactivation DNA repair function, uses energy from visible light to repair DNA damage caused by ultraviolet (UV) light, and it’s found in many organisms, including bacteria, fungi, plants, and many animals. This repair kit is one of the reasons why
Read full article » http://www.gizmodo.co.uk/2018/10/hungry-dinosaurs-may-be-the-reason-humans-need-sunscreen/
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