The Northern leopard frog Rana pipiens and Southern leopard

Last updated: 2/5/2023

The Northern leopard frog Rana pipiens and Southern leopard frog Rana utricularia are morphologically similar but their mating calls sound very different Based on this what is the best explanation for why these frogs are considered separate species 1 They have undergone habitat isolation because one species is entirely terrestrial while the other is entirely aquatic 2 They are too morphologically different to interbreed 3 They have undergone behavioral isolation which prevents them from interbreeding 4 They do interbreed but produce sterile hybrids