As butterflies flit among flowers, they don’t all view blossoms the same way. In a phenomenon called sexually dimorphic vision, females of some butterfly species perceive ultraviolet color while the males see light and dark. University of California, Irvine biologists have discovered that in at least one species, the variation results from a vision gene’s jump onto a sex chromosome. It’s the first known finding that this kind of genetic change causes sexually dimorphic vision.
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Source: Phys.org