Introduction to Cell & Molecular Biology (BIOL121) - Dr. S.G. Saupe (ssaupe@csbsju.edu); Biology Department, College of St. Benedict/St. John's University, Collegeville, MN 56321 |
Questions: Cell Division Figures
Directions: Obtain a copy of the diagrams of mitosis and meiosis. Then answer the following questions.
Mitosis Figures: Obtain a copy of the diagrams of mitosis and then answer the following questions:
Stage | Name of Stage | Describe briefly what is occurring during this stage |
A. | ||
B. | ||
C. | ||
D. | ||
E. | ||
F. | ||
G. | ||
H. |
- chromatin
- chromosome
- chromatid
- centrosome
- centriole
- spindle
- microtubule
- metaphase plate
- cleavage furrow
- nucleus
- nucleolus
Meiosis Figures: Obtain a copy of the diagrams of meiosis. Then answer the following questions.
1. Assume that diagram "A" represents a sex cell in interphase before meiosis. Further assume that the diploid number of this cell is 8 (2n = 8). For each figure, indicate whether it is: (a) is haploid (n) or diploid (2n); (b) the number of chromosomes in the cell; (c) the name of the stage; (d) whether the diagram depicts meiosis I or II; and (e) a brief description of what is occuring.
Stage | Ploidy (2n or n?) | Chromosome # | Name of Stage | Meiosis I or II? | Describe briefly what is occurring during this stage |
A. |
2n |
8 | |||
B. | |||||
C. | |||||
D. | |||||
E. | |||||
F. | |||||
G. | |||||
H. | |||||
I. |
2. Define or describe the following terms/concepts:
haploid
diploid
homologous chromosome
bivalent/tetrad
synapsis
Is this a plant or animal cell? Explain.
List the stages in order. The first one is done
for you:
A
→
How can you tell which chromosomes come from which parent?
Last updated: July 14, 2009 � Copyright by SG Saupe