Why are invasive species a problem

Astudent is looking through a microscope at some cells of an onion root tip. many of these cells are undergoing division since the root tip grows quickly and requires more cells. which cell most recently underwent metaphase? w x y z

What is the correct order of cell division? include what happens in each phase

Genetic orders can result when sister chromatids fail to separate properly during which phase is this problem most likely to occur