A point evolution event can happen extremely rapidly if there's a clearly selective mortality event.
If a new predator is introduced to a population that selectively kills only certain traits, that mutation can become dominant in the population within just one or two generations.
Imagine if aliens came to Earth and killed everyone over 5'6" tall. That "evolution" would be essentially instantaneous.
If a new predator is introduced to a population that selectively kills only certain traits, that mutation can become dominant in the population within just one or two generations.
Imagine if aliens came to Earth and killed everyone over 5'6" tall. That "evolution" would be essentially instantaneous.