Can women have a falsetto voice?
If not, why not? If yes, do they just have a deep enough voice or does it depend on something else? Are there men that don't have a falsetto voice?
Edited to add a question from the discussion in the comments:
Is falsetto the same thing as "head voice"? At least in some usages? My impression was that head voice refers to use of resonance cavities in your skull, while falsetto refers to a certain use of your vocal chords, but wikipedia differs here, so some expert references would be appreciated.