Mitosis and Meiosis Online Lab

Answer the following questions using the provided links.

  1. Click here
  2. How many steps to complete Mitosis? ______Meiosis? ______
  3. Go to the last step in Meiosis. What does it say about “daughter cells”?

______Recently in the media news there has been a lot of discussion about “stem cells”. Click here

  1. What is a blastocyst? How many cells does it have?______

On the next slide what does it say about the potential of stem cells?______

______Where are the cells placed to develop? ______

  1. Look at the last slide. What do they hope these cells can be used for?

______

Here is another picture of ablastocyst the pink cells are the stem cells.

  1. Where is the blastocyst located?

______This shows you how big it is. Compare the stem cell to the dime. (Here are some realones!)

Look at the following about cancer; On the second to last slide it talks about why cancer cells are so dangerous.

  1. What does “metastasize" mean?______
  2. And why is it so dangerous? ______

______

  1. What is Meiosis?______

Use this RESOURCE to browse through each part.

Part 1: Reproduction

Give an example of asexual reproduction.______

What is a clone?______

Name the two types of gametes produced by meiosis.______

Part 2: Chromosomes in a Diploid Cell

What is the diploid chromosome number for humans?______
Egg and sperm cells are [ haploid / diploid ]Circle one

Part 3: Meiosis 1 and Meiosis 2

Name the stage of meiosis 1 where each of the following occurs:

Homologous chromosomes pair and form synapses / ______
Paired Chromosomes (bivalents) align at metaphase plate / ______
Two complete daughter cells form / ______
Nuclear membrane disappears. / ______
Nuclear membrane reforms. / ______
Chromosomes move to separate poles. / ______
View the meiosis 1 and 2 animation

At the end of meiosis 2, each cell contains how many chromosomes? ______

Part 4: A Review of Meiosis

Name and describe 2 errors that can occur during meiosis.
______

Check out the following videos:Meiosis

Conclusion

  1. Describe the differences between daughter cells produced by meiosis and daughter cells produced by mitosis.

______

______

  1. Review the diagram, and fill in the correct number of chromosomes per human cell in each blank.

Mother _____ Father _____

Meiosis ↓ Meiosis ↓

egg _____ sperm _____

Fertilization

zygote _____

Mitosis ↓

Embryo _____

Mitosis ↓

baby _____

12. How many chromosomes are there in a human skin cell produced by mitosis? ______

How many chromosomes are there in a human sperm cell produced by meiosis? ______

13. List 2 differences between mitosis and meiosis.

______

14. List 2 similarities between mitosis and meiosis?

______

Reinforce the concept of mitosis and meiosis by using the many animations and videos shown on the Cell Division homepage.