Cell Division-Mitosis and Meiosis Lab
Part 1A: Cell phase diagrams
Part 1: Analysis Questions
1. Since there is only a single parent cell performing asexual reproduction, it only replicates the DNA exactly the same thus there is no randomization occurring.
2. In interphase, the cell is going through repair and growth, also in S phase the cell is replicating it's DNA.
3. The difference between animal and plant cells is that plant cells also develop a cell plate and wall, while animal cells only have cleavage furrows.
2. In interphase, the cell is going through repair and growth, also in S phase the cell is replicating it's DNA.
3. The difference between animal and plant cells is that plant cells also develop a cell plate and wall, while animal cells only have cleavage furrows.
Part 1A: Data Table
1. Based on the data, it is scientifically appropriate to infer that cells remain in the interphase stage for the longest period of time compared to the other stages. Prophase and Metaphase appear to have have about equal time lengths for their stages and Anaphase and Telophase have similar stage time lengths shorter than the others.
2.
Onion Root Tip Cycle Pie Chart
2.
Onion Root Tip Cycle Pie Chart
Part 1B: Hypothesis
If a root was exposed to lectin the observed cell cycle would slow due to the lectin being from fungus which means it is mutated. Since it is mutated it will bind to areas where normal PHA-M would bind causing it to not divide properly.
Chi-Square Analysis
Null Hypothesis: If the roots are exposed to the lectin there will be no change in the cell division rate.
Alternate Hypothesis: If the tree roots are exposed to the lectin there will be a change in the cell division rate.
*for the test we will use the .05 significance level
Alternate Hypothesis: If the tree roots are exposed to the lectin there will be a change in the cell division rate.
*for the test we will use the .05 significance level
Since the value of 6.492 is higher than the ,05 significance level, the null hypothesis must be rejected as false. The is now statistical evidence to show that the alternative hypothesis that the lectin does have an effect on the roots rate of cell cycles.