I'm preparing for an Olympiad and while I was going through some of the old papers I found a question. I googled it but a lot of people have different answers to it. Please help.
A student treats some onion root tips with colchicine that is responsible for arresting cell division at the metaphase stage (by dissolving spindle fibres) and further prepared a slide of the root tip staining with acetoorcein (stains chromatin) and observed under high power of compound microscope. He is well aware of the cell cycle given alongside.
Question: Which of the following is not true about his observation?
a) Most cells are in Interphase
b) Most cells are in the metaphase
c) No cells are in anaphase or telophase
d) Chromosomes could be observed better than a slide prepared without colchicine treatment.
According to me the answer should be (c) because if colchicine arrests cell division at metaphase, anaphase and telephase being the subsequent processes would not happen. But a lot of people are saying it should be (a) or (d). I'm stumped, any help would be appreciated.