According to the theory of evolution, what characteristics do all living organisms share suggesting that all life-forms on Earth arose from a single ancestor?
A) They share a common organic chemistry.
B) They have DNA within their nucleus.
C) They exhibit the same basic cell wall.
D) They perform the same mode of reproduction.

Question

Quizplus · Accepted Answer

All living organisms share a common organic chemistry, including DNA, RNA, and the same basic set of amino acids, which supports the theory that all life on Earth originated from a common ancestor. Choices B, C, and D are incorrect because not all organisms have DNA within a nucleus (e.g., prokaryotes), cell walls vary greatly among different organisms, and modes of reproduction can differ significantly across the tree of life.

According to the Theory of Evolution, What Characteristics Do All