Some key innovations in the evolution of eukaryotes from a prokaryotic ancestor are membrane-bound organelles. which of the following organelles or features is likely to be a common component shared by both eukaryotic cells and their prokaryotic ancestors? some key innovations in the evolution of eukaryotes from a prokaryotic ancestor are membrane-bound organelles. which of the following organelles or features is likely to be a common component shared by both eukaryotic cells and their prokaryotic ancestors? chloroplasts ribosomes mitochondria nuclear envelope