Cell Division: Mitosis and Meiosis

Keep the following question in mind during the next few lessons...

How do eukaryotic cells divide to produce genetically identical cells or to produce gametes with half the normal DNA?

Exam the six GIFs below

Read through the background information on cell division on pages S83 to S85 of your lab manual. Make sure you take notes on how the cell cycle is controlled and the role played by cyclins, cyclin-dependent kinases and mitosis-promoting factors.

Use any additional resources you feel are necessary to answer the questions 1-8 on pg 86

Submit your answers to your assignment folder.

You will be given some chromosome models in class on Monday and asked to model the process of mitosis and answer some questions. Make sure you are prepared to do this.

Please download the Tackk App and create an account.

1. Create a Tackk with above title - this will be your lab report

2. Add #NPAPBio

3. Add under the title...

How do eukaryotic cells divide to produce genetically identical cells or to produce gametes with half the normal DNA?

4. Create a Prelab section and paste in the answers to your Prelab questions

5. Summarize how cell division is controlled, including a diagram if necessary

6. Explain how eukaroytic cells divide to produce genetically identical cells. You do not need to know the names of the stages just the general way the process works, chromosome duplication, centromere, sister chromatids etc.

I will ask you to model this in class tomorrow, take relevant pictures, add appropriate labels to your pictures as needed and add to the lab report.

7. Add answers to the questions on page S87 of the lab manual

8. Various fungi can negatively affect the growth of soybeans by producing a lectin-like protein. Lectins can induce mitosis in the root apical meristem tissue which will often weaken the plant tissue.

Complete Part 2: Effects of Environment on Mitosis (pgS87) by designing an experiment to test the effect of lectin on mitosis in root tips. Use the questions in Part 2 on pg 87 to help guide your thinking.

9. This lab introduces the concepts of 'null hypothesis' and the 'chi-squared' test. Research these concepts and be ready to explain them in class.

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