Which of these is not a step in natural selection? variation underpopulation struggle for existence survival of the fittest

Natural selection is the gradual evolutionary change as a result of

In artificial selection, ______ determines the traits that give individuals the greatest reproductive success.Multiple choice question.adaptationgenetic driftthe environmenthuman choice

Natural selection occurs whenMultiple Choicewhen a small number of individuals of a population break away and form a new population.a factor in the environment alters the genetic information in DNA of all members of a species.only when nonrandom mating occurs.a new genetic variation occurs that allows individuals to have a reproductive and survival advantage.

Which of the evolutionary forces is most likely to decrease variation between populations?Group of answer choicesgene flowfounder effectrandom mutationnatural selection

Which term best describes Darwin’s theory of natural selection?Inheritance of acquired characteristicsSelection against the fittest individualDifferential reproductive successExtinction never occurs