Butterfly species a master of disguise
Supergene allows butterfly to mimic several species
By Tina Hesman Saey, 12:39 PM August 19, 2011
The tasty Heliconius numata butterfly evades predators by copying the wing patterns of foul-tasting Melinaea butterflies. H. numata, also known as the passion-vine butterfly, has to get the pattern exactly right or a sharp-eyed bird will spot the fake and gobble it up.
Born mimics, members of the species lock in wing patterns with flipped-around bits of DNA, Richard ffrench-Constant of the University of Exeter in England and colleagues report online August 14 in Nature.
The flipped DNA cause...
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