Melanism is a genetic mutation characterized by an overproduction of melanin, the pigment responsible for the dark coloration ...

One such animal is the grasshopper, Tetrix subulata, that's featured in several studies investigating fire melanism. A 2011 study found that the frequency of melanistic grasshoppers was ...

“Melanism is something that occurs very rarely within birds and mammals,” said Adams in a statement sent to IFLScience. “I’ve heard about it before in other species of penguins so I’ve ...

This change from predominantly light to dark forms in industrial areas is called industrial melanism. Note that this change was not due to pollution making the moths darker. The dark variety had ...