The correct answer is C. The separation of chromatids happens during Anaphase, which is represented by R in the diagram.
I don't think the answer is A as that seems a bit drastic, I think it's C.
A planarian can regrow any missing body part. Truth be told, in the event that you take a planarian and excise it into a few little pieces, every last one of those body sections can recover into an entirely different worm.
Answer:
After an organism is buried, minerals carried by water such as silica, calcite or pyrite replace the organic material in the fossil. Some common examples are most dinosaur bones, petrified wood, and many trilobite fossils.
