EBK BIOLOGY
EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
bartleby

Videos

Question
Book Icon
Chapter 15, Problem 1TY
Summary Introduction

Introduction: Eukaryotic cell cycle involves a series of changes including growth, replication, and division and this results in the production of new cells. During interphase, the cell prepares itself for the process of cell division. Interphase is composed of many phases which prepare the cell for the process of cell growth and division.

Expert Solution & Answer
Check Mark

Answer to Problem 1TY

Correct answer: The chromosomes are replicated in the “S phase” of the cell cycle. Hence, the correct answer is option b.

Explanation of Solution

Reason for correct answer:

Interphase of the eukaryotic cell cycle is composed of many phases. The cell cycle involves the growth, division, and replication of chromosomes. This ultimately results in the production of the new cells through cell division. Replication of chromosomes to form sister chromatids takes place during S phase of the interphase. A cell will have twice the number of chromatids compared to the number of chromosomes present in the G1 phase.

Option b is given as “S phase”.

Replication of chromosomes takes place in the S phase of the cell cycle. Hence, the correct answer is option b.

Reason for incorrect answer:

Option a is given as “G1 phase”.

In the G1 phase, the cell may become committed for the process of cell division. The process of cell growth also occurs during this phase. A cell may accumulate certain molecular changes that will guide the cell to advance through the rest of the cell cycle. Hence, option a is incorrect.

Option c is given as, “M phase”.

M phase is defined by the presence of mitosis and cytokinesis. During mitosis, the mother cell is divided into two daughter cells and each daughter cell receives the same complement of chromosomes. Hence, option c is incorrect.

Option d is given as “G2 Phase”.

In addition to cell growth, proteins necessary for the process of cell division are synthesized in G2 Phase. Hence, option d is incorrect.

Option e is given as, “none of the above”.

G1, S, and G2  phase make the interphase of the eukaryotic cell cycle. The process of replication of chromosomes takes place during the S phase of the cell cycle. Hence, option e is incorrect.

Hence, the options a, c, d, and e are incorrect.

Conclusion

The process of replication of chromosomes takes place in the S phase of the eukaryotic cell cycle.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
You aim to test the hypothesis that the Tbx4 and Tbx5 genes inhibit each other's expression during limb development. With access to chicken embryos and viruses capable of overexpressing Tbx4 and Tbx5, describe an experiment to investigate whether these genes suppress each other's expression in the limb buds. What results would you expect if they do repress each other? What results would you expect if they do not repress each other?
You decide to delete Fgf4 and Fgf8 specifically in the limb bud. Explain why you would not knock out these genes in the entire embryo instead.
You implant an FGF10-coated bead into the anterior flank of a chicken embryo, directly below the level of the wing bud. What is the phenotype of the resulting ectopic limb?  Briefly describe the expected expression domains of 1) Shh, 2) Tbx4, and 3) Tbx5 in the resulting ectopic limb bud.
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Text book image
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Text book image
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Text book image
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Text book image
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
cell division of meiosis and mitosis; Author: Stated Clearly;https://www.youtube.com/watch?v=A-mFPZLLbHI;License: Standard youtube license