1. What propels the centrosomes apart from one another during prophase? 2. How do the kinetochores of sister chromatids end up facing in opposite directions? 3. What role do the nonkinetochore microtubules play during mitosis?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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1. What propels the centrosomes apart from one another
during prophase?
2. How do the kinetochores of sister chromatids end up
facing in opposite directions?
3. What role do the nonkinetochore microtubules play
during mitosis?
4. During prometaphase, the sister chromatids jerk back
and forth. What causes this back-and-forth motion?
5. When in mitosis does the cell reach the M checkpoint,
and what is its function?
6. Imagine a cell with a genetic mutation that prevents it
from synthesizing functional cohesins. At what stage
might the cell cycle be disrupted? Support your
answer with evidence from the text.
7. Cytokinesis, the last stage of the mitotic M-phase,
divides the original cell into two daughter cells. How
do these daughter cells compare genetically?
Transcribed Image Text:1. What propels the centrosomes apart from one another during prophase? 2. How do the kinetochores of sister chromatids end up facing in opposite directions? 3. What role do the nonkinetochore microtubules play during mitosis? 4. During prometaphase, the sister chromatids jerk back and forth. What causes this back-and-forth motion? 5. When in mitosis does the cell reach the M checkpoint, and what is its function? 6. Imagine a cell with a genetic mutation that prevents it from synthesizing functional cohesins. At what stage might the cell cycle be disrupted? Support your answer with evidence from the text. 7. Cytokinesis, the last stage of the mitotic M-phase, divides the original cell into two daughter cells. How do these daughter cells compare genetically?
8. How does the size of the daughter cells immediately
after cytokinesis compare to the size of the parent cell
at the end of G,?
9. Imagine that an animal cell is treated in G, with a toxin
that prevents polymerization of actin into
microfilaments. At what subsequent stage would the
cell cycle probably be disrupted? Support your answer
with evidence from the text.
Transcribed Image Text:8. How does the size of the daughter cells immediately after cytokinesis compare to the size of the parent cell at the end of G,? 9. Imagine that an animal cell is treated in G, with a toxin that prevents polymerization of actin into microfilaments. At what subsequent stage would the cell cycle probably be disrupted? Support your answer with evidence from the text.
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