Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 16.1, Problem 1CS
Summary Introduction
To describe: The role of checkpoint proteins in the prevention of cancer.
Introduction: Checkpoints help in regulating the process of the eukaryotic cell cycle. Checkpoint proteins synthesized at different checkpoints present in the eukaryotic cell cycle. These checkpoint proteins help in the prevention of cancer. Checkpoints are located at G1, G2 and M phases of eukaryotic cell cycle.
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Objective: To review the phases of mitosis with the understanding that in a real tissue or a non-synchronized cell culture, different mitotic phases and cells in interphase will be observed at a certain time.
Interphase is the period between mitotic events; all other phases are part of mitosis and their individual probabilities add up to the total probability of seeing cells undergoing mitosis.
Pay attention to the individual probabilities for cells in each phase of the cell cycle.
Problem N° 10
For a certain type of animal tissue, the probability of a randomly selected cell being in a particular stage of the interphase/mitosis cycle is given by the following table:
Stage
Probability
Interphase
0.5
Prophase
0.1
Metaphase
0.05
Anaphase
0.2
Telophase
0.15
Suppose you examine 100 cells at random from this tissue.
A) How many cells do you expect to see in metaphase? _____ cells
B) You have selected a high magnification (2000 X) in your…
MODEL 1:
M-phase checkpoint
G2 checkpoint
1. Consider each of the cells described below and
predict at which stage of the cell cycle (G1, S, G2,
M, or GO) they are currently in
Mitosis
A newly generated daughter cell
G1
A cell that is actively using DNA polymerase
A cell with fully condensed chromosomes
A mature, functioning neuron
(Hint: It will never divide again)
G, checkpoint
A cell with uncondensed, replicated chromosomes
DNA Synthesis
Chapter 16 Solutions
Biology
Ch. 16.1 - Researchers usually treat cells with drugs that...Ch. 16.1 - Which phases make up interphase?Ch. 16.1 - Prob. 1CSCh. 16.1 - Prob. 1EQCh. 16.1 - The Eukaryotic Cell Cycle CoreSKILL What...Ch. 16.1 - Prob. 3EQCh. 16.2 - Prob. 1CCCh. 16.2 - Mitotic Cell Division Concept Check: What are the...Ch. 16.3 - Core Skill: Modeling The goal of this modeling...Ch. 16.4 - Sexual Reproduction Concept Check: What is the...
Ch. 16.5 - Variation in Chromosome Structure and Number...Ch. 16 - Prob. 1TYCh. 16 - Prob. 2TYCh. 16 - Prob. 3TYCh. 16 - Prob. 4TYCh. 16 - Prob. 5TYCh. 16 - Which of the following is not an event of anaphase...Ch. 16 - Prob. 7TYCh. 16 - Which of the following statements accurately...Ch. 16 - Prob. 9TYCh. 16 - Aneuploidy may be the result of a. duplication of...Ch. 16 - Prob. 1CQCh. 16 - Prob. 2CQCh. 16 - Prob. 3CQCh. 16 - Prob. 1COQCh. 16 - A diploid eukaryotic cell has 10 chromosomes (5...
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