Question

Evidence that cytoskeletal elements have ancient origins comes from

Answer 1

-the sequence similarities of cytoskeletal elements when comparing distantly-related organisms.
-the presence of cytoskeletal elements in both eukaryotes and prokaryotes.
-the observation that both prokaryotes and eukaryotes use cytoskeletal elements to assist cell division.
-the ability to form functional hybrid microfilaments from actin monomers taken from distantly-related organisms.