Review the stages of the eukaryotic cell cycle. Suppose a 2N= 4 cell goes through interphase. What are the number and structure of the chromosomes during: G1 phase? S phase? G2 phase? If an N= 3 cell undergoes mitosis, what will be the number and structure of the chromosomes the start of mitosis? What will the number and structure of the chromosomes be at the end of mitosis and cytokinesis?

Review the stages of the eukaryotic cell cycle. Suppose a 2N= 4 cell goes through interphase. What are the number and structure of the chromosomes during: G1 phase? S phase? G2 phase? If an N= 3 cell undergoes mitosis, what will be the number and structure of the chromosomes the start of mitosis? What will the number and structure of the chromosomes be at the end of mitosis and cytokinesis?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter2: Cells And Cell Division

Section: Chapter Questions

Problem 8QP: In the cell cycle, at which stages do two chromatids make up one chromosome? a. beginning of mitosis...

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In the cell cycle, at which stages do two chromatids make up one chromosome? a. beginning of mitosis b. end of G1 c. beginning of S d. end of mitosis e. beginning of G2
Separation of the sister chromatids is a characteristic of which stage of mitosis? a. prometaphase b. metaphase c. anaphase d. telophase
Visit this link (http://openstaxcollege.org/l/mitosis) to learn about mitosis. Mitosis results in two identical diploid cells. What structures form during prophase?
Chromosomes are duplicated during what portion of the cell cycle? a. G 1 phase b. S phase c. prophase d. prometaphase
Figure 6.4 Which of the following is the correct order of events in mitosis? a. Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the initotic spindle. The nucleus re-forms and the cell divides. The sister chromatids separate. b. The kinetochore becomes attached to the mitotic spindle. The sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus re-forms and the cell divides. c. The kinetochore becomes attached to metaphase plate. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus re-forms and the cell divides. d. The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. The kinetochore breaks apart and the sister chromatids separate. The nucleus re-forms and the cell divides.
Name the four main stages of mitosis, and describe what happens in each stage.
Match each stage with the events listed. ___ metaphase a. sister chromatids move apart ___ prophase b. chromosomes condense ___ telophase c. new nuclei form ___ interphase d. chromosomes aligned midway between spindle poles ___ anaphase e. G1, S, G2 ___ cytokinesis f. cytoplasmic division
Briefly explain: What is meant by the term “cycle” in cell cycle? What is happening in the S phase and M phase?
Which of the following statements is FALSE? A. Centrosomes are anchor points for microtubules and are essential to form the mitotic spindle. B. In the eukaryotic cell cycle the cell spends much more time in the interphase than in the mitotic phase. C. In telophase two nuclear envelopes are fully formed and the cell splits in two via cytokinesis. D. The contraction of the kinetochore microtubules leads to the separation of the sister chromatids during anaphase. E. In the prophase chromatin condenses into X-shaped chromosomes.
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 stage of the cell cycle is the longest? Why are onion root tips a good choice for viewing cells in different stages of the cell cycle? Are there any mammalian cells that would be a good source for dividing cells? What types of cells would most like NOT have cells undergoing division?
Select the phase of the cell cycle depicted in the image below where new membranes form around the daughter nuclei and the chromosomes are separated. telophase interphase prophase anaphase metaphase