Recent research has revealed the presence of cytoskeletal proteins in prokaryotes.Prior to this, it was thought that the cytoskeleton was unique to eukaryotes.Given your knowledge of the evolution of eukaryotes, this new information would support which of the following statements?
A) Prokaryotes and eukaryotes arose at the same time in evolution.
B) Prokaryotes evolved from a eukaryotic ancestor.
C) The prokaryotic ancestor to eukaryotes had genes for cytoskeletal proteins.
D) Prokaryotes are evolving features that are similar to those in eukaryotes.
E) Prokaryotes have complex cytoskeletons similar to those found in eukaryotes.

Question

Quizplus · Accepted Answer

The fact that cytoskeletal proteins have been found in prokaryotes supports the theory that the prokaryotic ancestor to eukaryotes already had genes for these proteins. It does not suggest that prokaryotes evolved from eukaryotes or arose at the same time as them, and it does not provide evidence that prokaryotes have complex cytoskeletons similar to those of eukaryotes.

Recent Research Has Revealed the Presence of Cytoskeletal Proteins in Prokaryotes.Prior