Which one of the following statements is TRUE?
A)Natural selection works on variation already present in a population.
B)Natural selection works on nonheritable traits.
C)Individuals evolve through natural selection.
D)Individual organisms evolve structures that they need.

Question

Quizplus · Accepted Answer

Natural selection acts on the variation that is already present in a population. It does not create new variations but only selects the individuals with advantageous variations that help them survive and reproduce. Thus, over time, the proportion of advantageous traits in a population increases, leading to evolution. B is incorrect because natural selection acts on heritable traits. C is incorrect because individuals do not evolve, but the population as a whole evolves through natural selection. D is incorrect because organisms do not actively evolve structures that they need, but rather, those traits that already exist and confer an advantage in a given environment are selected for.

Which One of the Following Statements Is TRUE