- Information
- AI Chat
Cell Division Lab Worksheet
General Biology I - Lab (BIO-181L)
Grand Canyon University
Recommended for you
Students also viewed
- Corn Lab, DNA Transcription & Translation, and Cell Division Labs
- 2 Cell Staining and Microscopy Lab F21
- 2 Cell Staining and Microscopy Lab F21
- 9 Enzyme Lab Worksheet F21
- Abrown LR Membrane - this is a mandatory lab report, don't copy it because lopes write is 100% smart.
- Cell Membrane Structure and Permeability Lab Report
Preview text
Compare the nuclear and chromosomal activities in mitosis and meiosis by completing the following table. Use a combination of drawings and descriptions. (8 points)
Table 1
Comparing Nuclear and Chromosomal Activities in Mitosis and
Meiosis
Activities Mitosis Meiosis
Synapsis Does not occur because sister chromatids duplicate
The pairing of two homologous chromosomes to form a tetrad
Crossing Over
No crossing over because the chromatids duplicate the chromosomes line up down the center
The trading of genetic material in the homologous pair
When Centromeres Split
In anaphase spindle fibers pull each other apart Same as mitosis
Chromosomes Structure and Movement During Anaphase
Spindles pull chromosomes apart, into two chromatids and they move to opposite poles
Anaphase I: Spindles pull homologous chromosomes to opposite poles
Anaphase II: Centromeres split as chromosomes are pulled apart into two chromatids, as spindles contracts they go to the opposite poles
Number of Divisions The cell divides once, chromosomes divide once
Cell divides once, then turn into two daughter cells divide once
Number of Cells Resulting
2 4
Number of Chromosomes on Daughter Cells
46 23
Genetic Similarity of Daughter Cells to Parent Cells
2 identical daughters 4 unique daughters
Name: Instructor & Section:
Cell Division Worksheet
F
1
Section 1: Observing Phases of Mitosis and Cytokinesis
Complete Table 2: Using a pencil, draw all structures that characterize each phase of cell division, including nucleus, nuclear envelope, nucleolus, aster, centromere, chromatids, chromosomes, spindle fibers, centrioles, and cleavage furrow. All drawings should be clear, colored, and labeled. ( points)
Table 2
White Fish and Onion Root Cells at Various Stages of Mitotic Cells
Division
Phase of Cell Division
White Fish
Onion Root
Brief Description of Each Phase
Prophase
Chromatids condense and begin to form a visible chromosome in the nucleus. Centrioles start to move to the opposite ends of the walls, and asters turn into miotic spindles. The nucleolus is still present.
Prometapha se
Nuclear envelope breaks down and the spindles start to attach to the the centromeres and the nucleolus vanishes
Metaphase
Chromosomes line the center of the cell, and spindle fibers attach the centromeres to the chromosomes and begin to pull them apart.
White Fish and Onion Root Cells at Various Stages of Mitotic Cells
Division continued
Phase of Cell Division
White Fish
Onion Root
Brief Description of Each Phase
Anaphase
Spindles pull apart the chromosomes. They pull each chromatid to opposite ends of the cell where the poles are. The cleavage furrow begins to form
Telophase
Spindles go back to aster formation, and the nuclear envelopes form again around the chromatids on opposite ends of the cell. Cleavage happens to prepare cell to split in two in animals or the cell wall forms in the middle of the nuclei to split the cell in plants
Hint: Notice the absence of the cell wall in the white fish slide as most cells appear as round or irregularly shaped. In addition, aster is an array of microtubules at the poles around which the microtubules of the spindle and asters appear to radiate**.**
Section 2: Modeling Interphase and Meiosis
Draw each step or utilize the photos taken to show a comprehensive figure displaying the steps of meiosis. If drawing, use colors and labels to identify chromosomes and crossing over. (8 points)
Cell Division Lab Worksheet
Course: General Biology I - Lab (BIO-181L)
University: Grand Canyon University
This is a preview
Access to all documents
Get Unlimited Downloads
Improve your grades
Why is this page out of focus?
Why is this page out of focus?
Students also viewed
- Corn Lab, DNA Transcription & Translation, and Cell Division Labs
- 2 Cell Staining and Microscopy Lab F21
- 2 Cell Staining and Microscopy Lab F21
- 9 Enzyme Lab Worksheet F21
- Abrown LR Membrane - this is a mandatory lab report, don't copy it because lopes write is 100% smart.
- Cell Membrane Structure and Permeability Lab Report