AP Biology 4.5.B Mitosis and Chromosome Distribution
Practise AP Biology 4.5.B questions by tracing mitotic chromosome movements and explaining how spindles and cytokinesis produce daughter cells.
- Syllabus
- Effective Fall 2025
- Course
- AP Biology
Exam points
- sequence mitotic stages and chromosome movements from prophase through telophase
- explain how spindle fibers, kinetochores and microtubules distribute sister chromatids
- connect mitosis and cytokinesis to growth, tissue repair and asexual reproduction
4.5.B—Explain how mitosis results in the transmission of chromosomes from one generation of cells to the next question 1
A student collected samples of cells from a woody plant during the spring and produced the drawings below. Sample 1 was collected from the woody stem of the plant. Sample 2 was collected from the root tip of the plant. Cells in different steps of mitosis are labeled with letters A, B, C, D, and E in Sample 2.
Figure 1. Drawings of samples of plant cells collected from two locations in a woody plant during the spring
Question (a)
(a)
Describe the role of mitosis in the growth of a plant.
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Question (b)
(b)
Refine the model in the space provided for your response by using the letters from four of the cell labels of Sample 2 to represent the sequential steps of mitosis.
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Question (c)
(c)
Explain how the arrangement of cellular components during the step of mitosis portrayed by cell D in Sample 2 facilitates the proper distribution of chromosomes to the two daughter cells.
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