Why the pigment evolved is a bit of a mystery.
The pigment behind red hair is a bit of a mystery Scientists have made a big leap in discovering the origins of ginger hair – in 10 million-year-old frogs. Palaeontologists at University College Cork found the earliest evidence of pheomelanin, the pigment that produces ginger colouration, in the ancient specimens. The study marks a breakthrough in the molecular analysis of fossils, which will help reconstruct the original colours of extinct species.
Beyond being involved in colour patterns that may help with camouflage, the reasons behind pheomelanin’s evolution remain a mystery. In humans it remains very rare – less than 2% of the world’ population has red hair. Now however, having discovered traces of the pigment much earlier in the fossil record, its origins may be better understood.
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