Which of the following statements regarding complexity is true?
A) Evolution always progresses toward complexity.
B) Complexity, once gained, cannot be lost.
C) Modern bacteria and archaea are vastly more complex than ancestral forms.
D) Complexity, once gained, can be lost.

Question

Quizplus · Accepted Answer

Complexity, once gained, can be lost. This is evident in many examples of evolutionary history where organisms have undergone simplification due to changes in their environment or natural selection. This also contrasts with option A, which is incorrect, as evolution does not always progress towards complexity.

Which of the Following Statements Regarding Complexity Is True