Do mutations excist?

Hey hey

They more I learn about these fascinating creatures the more questions I have to ask

My normal field of expertise is birds, witch lend it self over to ask if one of you guys know more about mutations in moths and butterflies, more specifically color mutations.

I know by know that a lot of species have dark morphs and some even seasonal morphs. Witch gives me my first question, how many species do have dark morphs? And secondly how do they inherit, recessive, dominant?

third question; Do albino’s for example exist? Searching on the web didn’t give me the information I wanted, so that’s why I’m asking here.

Any other morphs information is also more then welcome!

Friendly regards Ewout