In many wild animals, however, melanocortin levels vary seasonally, and linking color to melanocortin levels results in the white in winter/dark in summer seasonal variation seen in species like the Arctic fox and the ermine.
(melanocortin levels; vary dark; L:In many wild animals) (melanocortin levels; linking; color) (summer seasonal variation; seen; L:in species like the Arctic fox and the ermine)
melanocortin levels melanocortin levels summer seasonal variation
vary dark linking seen
L:In many wild animals
color
L:in species like the Arctic fox and the ermine