I assume that lions don't have a concept of incest and they will just mate with any adult lioness in heat, daughter or not.
If so, is incest inevitable as the female cubs will grow up and remain in the pride? Their brothers will be kicked out as they reach mating age. But the females stay, so what is the mechanism that will prevent their fathers from mating with them?
I suppose that their fathers will be driven out of the pride by incoming males sooner or later. But if it doesn't happen soon enough, then what prevents them from mating with their daughters?