From pg 68, Whitefish Blastula Slide, complete #2 by identifying the phase of
mitosis - 4 pts
Practice identifying the phases of mitosis in the root tip of an onion,
Onion root tip image to use in completing Table 1
Table 1 - 17 pts Use the image of the root tip above to complete
Time for 100% is given ( about 15 hrs interphase = 900 mins + about 83 mins
mitosis = 983 mins) Note: Your counts may not match this time exactly because
you are only counting a small portion of the root tip.
pg 71 - no Qs - need beads to manipulate
Be sure you can step through the beading exercise to demonstrate mitosis and
meiosis as you will be asked to demonstrate it for 30 lab skill points.
If you feel good about your ability to distinguish between the processes of
mitosis and meiosis with the beads, this might be a good time to ask about being
graded on this skill (30 pts).
Staining an onion root specimen and observing with microscope Lab skills graded -
- instructions continued from previous page
Locate as many stages of mitosis as you can find. Try to confirm the amount of
chromosomes of the onion which is sixteen.
What is the basic shape of the cells observed?
How many nucleoli can you observe in each nucleus? (answer with a number)
What happens to the nuclear membrane during prophase?
What happens to the chromosomes during anaphase?
What happens to the nuclear material in late telophase?
________________________is the term used to describe the cell when it is resting
and not undergoing mitosis.
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