BIOLOGY: CONCEPTS & INVESTIGATIONS LL>C
BIOLOGY: CONCEPTS & INVESTIGATIONS LL>C
4th Edition
ISBN: 9781264013548
Author: Hoefnagels
Publisher: MCG CUSTOM
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Chapter 8, Problem 1MCQ

A DNA molecule is placed in a test tube containing fluorescently tagged nucleotides. DNA replication is induced. After replication,

a. only one DNA molecule would have two fluorescent strands.

b. both strands of each DNA molecule would be half-fluorescent.

c. each DNA molecule would have one fluorescent strand.

cl. both DNA molecules would be completely fluorescent.

Expert Solution & Answer
Check Mark
Summary Introduction

Introduction:

DNA replication is a process of producing two identical copies of DNA from parental DNA. DNA replication is known as semicoservative, because each new copy will have one parental strand.

Answer to Problem 1MCQ

Correct answer:

Each DNA molecule would have one florescent strand. This statement explains correctly that DNA replication is a semi conservative process. Therefore, option c. is correct

Explanation of Solution

Reason for the correct statement:

DNA replication is a semi conservative process in which new replicas of DNA will have one parental strand. So, in this DNA molecule one strand will be normal and other strand will be florescent.

Option c. is given as “each DNA molecule would have one florescent strand”.

As, “DNA replication is a semi conservative process so whenever a new replica is formed it will always have one parental strand, so in this DNA molecule one strand will be normal and other strand will be florescent”, is the right answer.

Hence, option c. is correct.

Reasons for the incorrect statements:

Option a. is given as “only one DNA molecule would have two florescent strands”.

This is never possible in case of replication because if replication occurs then parental strand is shared within the replicas, so both florescent strands cannot stick together. So, it is a wrong answer.

Option b. is given as “both strands of each DNA molecule would be half florescent”.

This is the case of dispersive replication, but in case of DNA it only replicate through semicoservative way. So, it is a wrong answer.

Option d. is given as “both DNA molecules would be completely florescent”

This is the case of conservative replication, but in case of DNA it only replicate through semi-conservative way. So, it is a wrong answer.

Hence, options a., b., and d. are incorrect.

Conclusion

DNA replicates through semi-conservative way in which new replica is formed and that new replica will always have one parental strand.

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
What is DNA polymerase? a.An enzyme that carries out DNA replication   b.Short, single strand of DNA that base-pairs with a specific DNA sequence   c.An enzyme that corrects mutations that arise during the replication of DNA   d.An enzyme that seals any gaps that remain between bases of replicating strands of DNA
Your lab partner tells you proteins are used to make enzymes, you say, no enzymes are used to make proteins. Who is right? Explain your answer. – realize that enzymes are proteins and that the enzyme polymerase is used to transcribe DNA
What is DNA polymerase?   A. An enzyme that corrects mutations that arise during the replication of DNA   B. An enzyme that seals any gaps that remain between bases of replicating strands of DNA   C. Short, single strand of DNA that base-pairs with a specific DNA sequence   D. An enzyme that carries out DNA replication
Knowledge Booster
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
  • What are major functions that DNA polymerase performs?   A. unzips the DNA strand and makes the new nucleotides   B. proof reads the new DNA strands for errors and corrects them   C. bonds the nucleotides together forming the new DNA strand   D. A, B, and C   E. A and B   F. B and C   G. A and C
    During DNA replication: A. The two DNA strands separate, each strand then becomes a template for the assembly of a complementary strand. Each new DNA helix has one old strand with one new strand. B. The two DNA strands separate, each strand then becomes a template for the assembly of a similar strand. Each new DNA helix has one old strand with one new strand. C. The two DNA strands separate, each strand then becomes a template for the assembly of a similar strand. Each new DNA helix has two new strands. D. The two DNA strands separate, each strand then becomes a template for the assembly of an identical strand. Each new DNA helix has one old strand with one new strand.
    When two adjacent bases in the same strand of DNA dimerize (form a covalent bond between them), what happens to the DNA?​   a. ​the original strand of DNA now contains a new DNA sequence   b. ​the original strand of DNA is prevented from opening during replication, so this section of DNA will not be replicated   c. ​the original strand of DNA is methylated, which causes the bases to mismatch   d. ​the original strand of DNA is kinked, which prevents DNA polymerase from working properly   e. ​the original strand of DNA is unaffected, so no additional mutations arise
    • SEE MORE QUESTIONS
    Recommended textbooks for you
  • Human Anatomy & Physiology (11th Edition)
    Biology
    ISBN:9780134580999
    Author:Elaine N. Marieb, Katja N. Hoehn
    Publisher:PEARSON
    Biology 2e
    Biology
    ISBN:9781947172517
    Author:Matthew Douglas, Jung Choi, Mary Ann Clark
    Publisher:OpenStax
    Anatomy & Physiology
    Biology
    ISBN:9781259398629
    Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
    Publisher:Mcgraw Hill Education,
  • Molecular Biology of the Cell (Sixth Edition)
    Biology
    ISBN:9780815344322
    Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
    Publisher:W. W. Norton & Company
    Laboratory Manual For Human Anatomy & Physiology
    Biology
    ISBN:9781260159363
    Author:Martin, Terry R., Prentice-craver, Cynthia
    Publisher:McGraw-Hill Publishing Co.
    Inquiry Into Life (16th Edition)
    Biology
    ISBN:9781260231700
    Author:Sylvia S. Mader, Michael Windelspecht
    Publisher:McGraw Hill Education
  • Human Anatomy & Physiology (11th Edition)
    Biology
    ISBN:9780134580999
    Author:Elaine N. Marieb, Katja N. Hoehn
    Publisher:PEARSON
    Biology 2e
    Biology
    ISBN:9781947172517
    Author:Matthew Douglas, Jung Choi, Mary Ann Clark
    Publisher:OpenStax
    Anatomy & Physiology
    Biology
    ISBN:9781259398629
    Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
    Publisher:Mcgraw Hill Education,
    Molecular Biology of the Cell (Sixth Edition)
    Biology
    ISBN:9780815344322
    Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
    Publisher:W. W. Norton & Company
    Laboratory Manual For Human Anatomy & Physiology
    Biology
    ISBN:9781260159363
    Author:Martin, Terry R., Prentice-craver, Cynthia
    Publisher:McGraw-Hill Publishing Co.
    Inquiry Into Life (16th Edition)
    Biology
    ISBN:9781260231700
    Author:Sylvia S. Mader, Michael Windelspecht
    Publisher:McGraw Hill Education
    DNA vs RNA (Updated); Author: Amoeba Sisters;https://www.youtube.com/watch?v=JQByjprj_mA;License: Standard youtube license