For example, if an organism could survive well and reproduce rapidly, but its offspring were all too small and weak to survive, this organism would make little genetic contribution to future generations and would thus have low fitness.
Foreksempel, hvis en organisme kunne overleve og reproducere sig selv hurtigt, mens dens afkom var alt for lille og for svag til at overleve, ville denne organisme gøre lidt genetiske bidrag til kommende generationer og dermed have lav egnethed.