CAMPBELL BIOLOGY V.1 W/MAST BIOL >CI<
2nd Edition
ISBN: 9781323740477
Author: Reece
Publisher: Pearson Custom Publishing
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Chapter 12, Problem 11TYU
EVOLUTION CONNECTION The result of mitosis is that the daughter cells end up with the same number of chromosomes that the parent cell had. Another potential way to maintain the number of chromosomes would be to carry out cell division first and then duplicate the chromosomes in each daughter cell. Assess whether this would be an equally good way of organizing the cell cycle. Explain why evolution has not led to this alternative.
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EVOLUTION CONNECTION The result of mitosis is that thedaughter cells end up with the same number of chromosomesthat the parent cell had. Another potential way to maintain thenumber of chromosomes would be to carry out cell divisionfirst and then duplicate the chromosomes in each daughtercell. Assess whether this would be an equally good way oforganizing the cell cycle. Explain why evolution has not ledto this alternative.
The image below is of a stained onion root tip. Determine the phase of mitosis that each cell below is in, and record that below.
Look closely - cells that are clearly stained are numbered in the image below. Use those numbers when assigning the phase of mitosis for each cell.
Using the same onion root tip image and data from the question above, which phase are the majority of cells in? Make a conclusion about what this means about the length of each phase of the cell cycle.
Which is not a stage of mitosis?a. prophase c. interphaseb. metaphase d. anaphase
Chapter 12 Solutions
CAMPBELL BIOLOGY V.1 W/MAST BIOL >CI<
Ch. 12.1 - How many chromosomes are drawn in each part of...Ch. 12.1 - WHAT IF? A chicken has 78 chromosomes in its...Ch. 12.2 - How many chromosomes are shown in the illustration...Ch. 12.2 - Compare cytokinesis in animal cells and plant...Ch. 12.2 - During which stages of the cell cycle does a...Ch. 12.2 - Compare the roles of tubulin and actin during...Ch. 12.2 - A kinetochore has been compared to a coupling...Ch. 12.2 - MAKE CONNECTIONS What other functions do actin...Ch. 12.3 - In Figure 12.14, why do the nuclei resulting from...Ch. 12.3 - How does MPF allow a cell to pass the G2 phase...
Ch. 12.3 - MAKE CONNECTIONS Explain how receptor tyrosine...Ch. 12 - Differentiate between these terms: chromosome,...Ch. 12 - In which of the three phases of interphase and the...Ch. 12 - Explain the significance of the G1, G2, and M...Ch. 12 - Through a microscope, you can see a cell plate...Ch. 12 - Vinblastine is a standard chemotherapeutic drug...Ch. 12 - One difference between cancer cells and normal...Ch. 12 - The decline of MPF activity at the end of mitosis...Ch. 12 - In the cells of some organisms, mitosis occurs...Ch. 12 - Which of the following does not occur during...Ch. 12 - Cell A has half as much DNA as cells B, C, and D...Ch. 12 - The drug cytochalasin B blocks the function of...Ch. 12 - VISUAL SKILLS The light micrograph shows dividing...Ch. 12 - DRAW IT Draw one eukaryotic chromosome as it would...Ch. 12 - EVOLUTION CONNECTION The result of mitosis is that...Ch. 12 - SCIENTIFIC INQUIRY Although both ends of a...Ch. 12 - WRITE ABOUT A THEME: INFORMATION The continuity of...Ch. 12 - SYNTHESIZE YOUR KNOWLEDGE For selected answers,...
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- The individual chromosomes become visible with a light microscope during which stage of mitosis? a. prophase b. prometaphase c. metaphase d. anaphasearrow_forwardSeparation of the sister chromatids is a characteristic of which stage of mitosis? a. prometaphase b. metaphase c. anaphase d. telophasearrow_forwardVisit this link (http://openstaxcollege.org/l/mitosis) to learn about mitosis. Mitosis results in two identical diploid cells. What structures form during prophase?arrow_forward
- Chromosomes are duplicated during what portion of the cell cycle? a. G 1 phase b. S phase c. prophase d. prometaphasearrow_forwardAfter mitosis, each daughter cell contains genetic instructions that are ______ and _____ chromosome number of the parent cell. a. identical to the parent cells; the same b. identical to the parent cells; one-half the c. rearranged; the same d. rearranged; one-half thearrow_forwardMatch each image in the diagram to the phase of mitosis it represents Prophase Metaphase Anaphase Telophasearrow_forward
- Which statement is true regarding mitosis?1.During prophase, the chromosomes become uncondensed and two new nuclei are formed.2.During telophase, the chromosomes align in the center of the cell.3.During metaphase, the chromosomes condense4.During anaphase, the chromatids separate and move to opposite poles.arrow_forwardDNA molecules are repeated during which step of the cell cycle? Explain how chromosomes' kinetochores function. The California two-spot octopus (Octopus bimaculoides) has 28 chromosomes in a diploid cell. Mitosis occurs in the cell. In each daughter cell, how many chromosomes do you have?arrow_forwardMitosis results in each cell: A. receiving exact copies of all chromosomes of original cell B. donating repaired chromosomes to the original cell C. receiving exactly half of the chromosomes of original cell D. doubling the number of chromosomesarrow_forward
- Some cancer drugs stop cell division by stabilizing microtubules so they cannot come apart. Which step of the mitosis is disrupted? A) Telophase B) cytokinesis C) Anaphase D) Metaphasearrow_forwardHomologous chromosomes align along the metaphase plate during which stage of mitosis? A. Anaphase B. Metaphase C. Telophase D. Early prophase E. Interphasearrow_forwardA scientist studying a group of somatic cells notices that when the cell cycle is complete, half of the daughter cells have no chromosomes and the other half have 92 chromosomes. In what phase of mitosis did an error most likely occur? Explain.arrow_forward
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The Cell Cycle and its Regulation; Author: Professor Dave Explains;https://www.youtube.com/watch?v=eqJqhA8HSJ0;License: Standard YouTube License, CC-BY
Cell Division - Mitosis and Meiosis - GCSE Biology (9-1); Author: Mr Exham Biology;https://www.youtube.com/watch?v=w7vp_uRA8kw;License: Standard YouTube License, CC-BY