Question

Which statement would least likely be used to describe variation?
Variations are inherited differences between individuals of the same species.
Variations that decrease reproductive success are more likely to be passed on.
Variations may result in changes to an entire population after many generations.
Variations provide some individuals with an advantage.

Answer 1

"Variations that decrease reproductive success are more likely to be passed on."

This is least likely because natural selection makes traits that reduce reproductive success less likely to be inherited; traits that increase fitness are more likely to be passed to future generations.