1. The muse of tragedy.
Origin: L, fr. Gr, lit, the songstress, fr, to sing.
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... This is because genes from different species are sometimes "incompatible". Image: Juan Gillermo Montanes/Mauricio Linares Heliconius melpomene (top) and Heliconius cydno (bottom) may have hybridised (Image: Juan Guillermo Montanes/Mauricio Linares) A well known example is the mule ...
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