Download Mitosis Minilab with page 283

Name ________________________________________________ Date ______________
Modeling The Cell Cycle Lab
Introduction:
The growth of an organism is controlled at the cellular level. An organism’s cells are in
a continuous cycle of growth and division. Each new daughter cell produced during this
process has the same exact genetic information that the parent cell had. The growth and
division of a cell is called the cell cycle.
Background Information:
1. What are the three steps of the cell cycle?
a. ___________________________
b. ___________________________
c. ___________________________
2. How many chromosomes are in the body cells of humans? ______________
3. When your body cells undergo mitosis, how many chromosomes do the new daughter
cells have? _________________
4. What are the steps (in order) of mitosis?
a. __________________________
b. __________________________
c. __________________________
d. __________________________
5. During telophase what structure do plant cells form that animal cells do not?
_________________________________
Procedure:
View cells in each stage of the cell cycle and make a sketch of each on a separate sheet
of paper. Answer questions 1 – 3, Analyze and Conclude, on page 283. Finish questions
in this packet.
Analysis and Conclusion:
The illustration below shows various stages of mitosis in a fast growing onion root tip.
Color the diagram above using the following key:
interphase – red
prophase - purple
metaphase - blue
anaphase - orange
telophase - green
Calculate the percentage of cells in the diagram of the onion that are in each stage. Circle
your answer.
Interphase
Anaphase
Prophase
Telophase
Metaphase
Remember:
What part of a very young onion would most likely go through the cell cycle the most, root,
stem, or leaf? Explain your choice using your knowledge of plant growth.
Label the following diagram of mitosis of an animal cell. The letters indicate stages of
the cell cycle. The numbers represent cellular structures.
Which stage of the cell cycle is not represented in the diagram above? _________________
What stage are the daughter cells in at the end of the cell cycle?____________________
If a body cell from a horse with 64 chromosomes went through mitosis how many
chromosomes would be in the daughter cells? ______________
How many daughter cells are produced from mitosis? _________