Which phase of mitosis (not the cell cycle) has the longest duration in the onion root tip cells? How do you know

1. https://www.youtube.com/watch?v=f-ldPgEfAHI&feature=youtu.be Describe three things you learned from the video (Amoeba sisters) about mitosis and the cell cycle.

3. a-Which phase of mitosis (not the cell cycle) has the longest duration in the onion root tip cells? How do you know

b-Which phase of mitosis has the shortest duration? How do you know?

c-How is cytokinesis different from mitosis?

d-Which phase of the cell cycle is the longest?

e-I have two flasks of human cells growing in culture, one is labeled “A”, the other “B”. A has a mitotic index (MI) of 0.55 and the other, B has a MI 0f 0.15. One of the cultures is composed of normal human cells, the other contains human cancer cells-isolated from a rapidly growing tumor cell line. Which is which? Which is “normal” cells? Which is the cancer cell culture? Explain your answer based on what you have learned from today’s lab and the videos watched.