Changes

#There must be a set of individuals.

#There must be a set of individuals.

#These individuals must reproduce somehow.

#The probability or rate of reproduction must be somehow dependent on a heritable trait of the individual (where a heritable trait is one that is more likely to be present in an individual's offspring than it is in the general population).

#These individuals must reproduce somehow, exhibiting heritability for their variations.

#Rates of survival and reproduction among this population must vary.

#The rates of survival and reproduction are not random, but are rather tied to variations in particular traits: those individuals exhibiting traits more conducive to survival, reproduction, or both are more likely to pass on their traits to their offspring.

In any such system, individuals whose traits allow them to reproduce more effectively will soon come to dominate the population.

In any such system, individuals whose traits allow them to reproduce more effectively will soon come to dominate the population.