Final answer:
Cells have similar DNA and genetic material, which supports the idea that all cells share a common ancestor. This is evidenced by the presence of fundamental cell structures across diverse organisms and the highly homologous DNA in closely related species.
Step-by-step explanation:
The statement B) Cells have similar DNA and genetic material provides evidence that supports the claim that all cells share a common ancestor. All living organisms are composed of one or more cells and all cells contain DNA that they pass on to daughter cells. This universal genetic material points to a common evolutionary history among diverse life forms, depicting that cells from different organisms, such as bacteria and humans, are indeed similar fundamentally.
Despite the vast diversity in cell shapes and functions, the presence of plasma membrane, cytoplasm, ribosomes, and DNA among all cells indicates shared ancestry. Furthermore, the fact that all life functions of organisms occur within cells and that all cells come from pre-existing cells (as stated by the cell theory), further corroborates this claim. This concept is reinforced by observing that DNA sequences are highly homologous in closely related organisms and that genetic material in both plants and animals suggests a shared lineage, further justifying the claim of a common ancestor.