This is what you need in your lab report

3. This report needs:
1. Title
2. Null Hypothesis
3. Figure 1
4. Tables 1, 2, 3
5. Conclusion

4. Null Hypothesis
If mitosis is 10% of the cell cycle,
then 10% of the observed cells will
be in one of the stages of mitosis.

5. Results
Interphase (G1, S,
G2)
prophase
prometaphase
metaphase
anaphase
telophase
Sketch an accurate
image for each box
Figure 1. Allium
root tips in the
different stages of
the cell cycle.

6. Results
Interphase Prophase Pro-
metaphase
Metaphase Anaphase Telophase
Root Tip
one
Root Tip
two
Root Tip
three
Total for
all 3 Root
Tips
Table 1. Number of cells in each phase

7. Results
Interphase Prophase Prometaphase Metaphase Anaphase Telophase
Total
Cells
Total
Mitosis:
Table 2. Class Data for Cells

8. Results
Group Observed
(o)
Expected
(e)
(o-e) (o-e)2 (o-e)2
________
e
Interphase
Mitosis
Ʃ
df = 1 p = 0.05
Table 3. Chi-square analysis of Allium root tip cells
Critical value 3.84

9. Discussion/ Conclusion
What happened?
How many cells in mitosis? How many cells did we EXPECT to have in
mitosis?
Why?
Why does this part of the plant have a lot of cells in mitosis or why did
this tissue sample match our expected data?
Do we accept or reject the null hypothesis? Why?
Explain what the Chi-square test tells us.