1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MakcuM [25]
3 years ago
8

If you were to repeat the Meselson Stahl experiments, but rather than use N15 and N14, you use P32 and P31, how would the result

ing DNA bands present in the CsCl gradient change?
Remember the initial culturing of bacteria is in the heavy (H) isotope then moved to lighter (L) isotope.

(A) Only newly synthesized 'daughter strands would contain heavy P32
(B) No strands of DNA would incorporate light P31 as P is not used in the synthesis of nucleic acids.
(C) The banding pattern would not change and the results would be similar as if you had used N14 and N15
(D) You can't tell since Nitrogen and Phosphorus have different atomic masses, therefore, the relative positions of the resulting (HH, H:L and L:L) DNA bands would differ from what was observed in the Meselson Stahl experiment using heavy and light N.
(E) A and C are correct.
Biology
1 answer:
bonufazy [111]3 years ago
4 0

Answer:

The correct answer will be option-C

Explanation:

The CsCl gradient centrifugation in Meselson Stahl experiments is done to separate the bands of the DNA containing isotopes on the basis of difference in the density.

In the experiment, bacterial cultures were grown in the medium of 15N and 14N but if we repeat the experiment with P32 and P31 instead of 15N and 14N and centrifugation is performed then the banding pattern will be the same as of the previous experiment as the method of the replication is same that is semi-conservative.

Thus, Option-C is the correct answer.

You might be interested in
Which phase of the cell cycle is the least common process of mitosis and what could be the reason?
AveGali [126]

Answer:

In anaphase, the shortest stage of mitosis, the sister chromatids break apart, and the chromosomes begin moving to opposite ends of the cell. By the end of anaphase, the 2 halves of the cell have an equivalent collection of chromosomes. In telophase, 2 daughter nuclei form. The nuclear envelope beings to reappear.

8 0
3 years ago
What ecological lesson can we learn from the controlled experiment on the clearing of forests?
VashaNatasha [74]

Vegetation controls water and nutrient loss from ecological lesson can we learn from the controlled experiment on the clearing of forests.

<h3>What about clearing of forest?</h3>
  • Deforestation is the intentional clearing of wooded land.
  • Forests have been cleared throughout history and into the present era to make room for agriculture and animal grazing as well as to obtain wood for fuel, manufacture, and construction.
  • Deforestation has dramatically altered the landscape all around the planet.
  • The process of permanently removing vegetation, such as trees and bushes, together with their roots, is known as clearing woods and forests.
  • There are both direct and indirect causes of deforestation.
  • Natural factors including storms, fires, parasites, and floods are among the direct culprits.
  • Human activities include the extension of agriculture, the raising of livestock, the extraction of timber, oil, and minerals, the building of dams, and the development of infrastructure.

Learn more about clearing of forest here:

brainly.com/question/12314060

#SPJ4

7 0
2 years ago
Hi I need help ^^
kotykmax [81]

Smoking is one of the major reason of Lung cancer. But one may have cancer even if the individual is not a smoker due to radiation, secondary air pollutants.

<h3>                                                                                                                        What is cancer?</h3>

Cancer is described as the uncontrolled and abnormal growth of cells in one’s body which are arrested in the growth phase of the cell cycle and multiply rapidly and does not mature  like normal cells, cancer is more aggressive form of a tumour.                                                                          

                                                                                         

The following describe the relation of smoking with lung cancer

                                           

  • Cancer is caused by oncogenes activating substances [OAS] some of them causes mutation in the body

  • These oncogenic substances in the smoke produced while smoking contains nicotine, hydrocarbons, cyclohydrocarbons and various other factors which converts  normal cells into cancerous cells

  • Hence,
  • smoking
  • causes
  • oral
  • and
  • lung
  • cancer

Learn more about Lung cancer

brainly.com/question/18317469

#SPJ1

4 0
2 years ago
What part does erosion play in the formation of a sedimentary rock?
marysya [2.9K]
Well erosion breaks down minerals and organic material and it helps to form sedimentary rock
4 0
3 years ago
DNA is organized into<br> A. Centromeres<br> B. Chromosomes<br> C. Chrome<br> D. Chromate
Georgia [21]

Answer:

Explanation:

b chromosomes

3 0
3 years ago
Read 2 more answers
Other questions:
  • Single-celled or unicellular fungi are: molds monolyathids protoplasm yeasts
    12·2 answers
  • What will happen to the half-life time of a chemical if the temperature is increased?
    13·2 answers
  • Which product of combustion contributes most to the greenhouse effect?
    6·1 answer
  • You and other scientists have been able to get the same results after many experiments. What is this proven data called?
    6·1 answer
  • Select all that apply.
    7·1 answer
  • When allosteric effector x binds to enzyme #1, the enzyme stops working. nevertheless, the speed of the reaction can be altered
    13·1 answer
  • Please help me! Thank you!
    7·1 answer
  • Match the behavior type with the corresponding action.
    15·1 answer
  • What does NBT stand for​
    13·2 answers
  •  ___ dating uses radioactive elements to _____ matter such as rocks and ___. As the radioactive elements _____, they turn into
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!