Organelles+and+Theory+of+Evolution

http://creation.com/did-cells-acquire-organelles-such-as-mitochondria-by-gobbling-up-other-cells

Chloroplasts and Mitochondria The hypothesis of the transformations of endosymbionts into organelles are exceptionally rare evolutionary events because of hypothetical difficulties in the origin of an import apparatus for nuclear-encoded, organelle-targeted proteins along with their targeting signals http://www.sciencedirect.com/science/article/pii/S0960982212003077