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
katovenus [111]
4 years ago
15

DNA polymerase fails to recognize that an incorrect nucleotide has been incorporated, resulting in a mismatch. Which repair path

way will correct this mistake?
A. Base excision repair
B. Mismatch repair
C. Direct repair by methyltransferases
D. Nucleotide excision repair
Biology
1 answer:
xenn [34]4 years ago
4 0

Answer:

The correct answer is B. Mismatch repair

Explanation:

Mismatch repair pathway recognizes the mismatched base pair that incorporated during DNA replication and then excise that incorrect base. After excision, it repairs the DNA.

The mismatched daughter strand is distinguished from the parent strand by mismatch repair system as the parent strand is methylated at some bases but the daughter strand is not methylated.  

Three proteins help in mismatch repair MutH, MutL, MutS. Mut H and Mut S recognize the mismatch, Mut H excise the unmethylated strand from 5' side. Then helicase and exonuclease enzymes clave the segment from cleavage site to beyond the mismatch base.  

The gap created by this action is filled by DNA polymerase and sealed by enzyme DNA ligase.

You might be interested in
The earth's magnetic field diverts most of the flow of current from:
Viefleur [7K]
I believe the correct answer from the choices listed above is the third option. <span>The earth's magnetic field diverts most of the flow of current from the sun. Hope this answers the question. Have a nice day.</span>
6 0
3 years ago
Read 2 more answers
Please double check my answers! If I'm incorrect, please explain to me the correct answer if you could. [Part 1]
liq [111]

Answer:

I'm liking D for the third one but you might be correct.

Explanation:

5 0
3 years ago
Explain why red blood cells can be maintained in an intact state by keeping them in a normal saline solution.
FrozenT [24]

Answer:

<u>The solution is isotonic.</u>

Explanation:

Saline solututions are mixtures of salt and water. In a normal saline solution, red blood cells maintain their shape. This is because the saline solution is isotonic. Essentially it has the same concentration as inside the red blood cell.

The water does not move down a particular gradient, thus the shape remains unchanged.

6 0
3 years ago
Who causes someone to have a bar head​
Rus_ich [418]

Answer:

the barber

Explanation:

he cuts hair

6 0
4 years ago
Predict what changes might occur if DNA is altered in a particular organism.
pishuonlain [190]

Answer:

Explanation:

If the DNA codons are altered in an organism, the genetic code will be inaccurate. This will result in genetic mutations and disorders, depending on how drastic the change was. The two types of mutations are point mutations, that just replace one nucleotide. There's also frame shift mutations, where the amount of codons are incorrect.

6 0
2 years ago
Other questions:
  • What rigid structure surrounds a plant cell membrane and provides support to the cell?
    11·1 answer
  • Is there more than one type of eukaryotic cells?
    6·1 answer
  • The central nervous system includes...
    10·2 answers
  • A neutron is combined in a nuclear reaction with a proton to make a heavy hydrogen nucleus. This nucleus then acquires _____ ele
    14·1 answer
  • Can someone please help me please please help me answer this please
    8·1 answer
  • Which process indicates how a mountain range slowly wears down over time?
    13·1 answer
  • True or false? Living things exist alone and have no interaction with other living things or their
    12·1 answer
  • 1.What similarities do you notice in what happened to the population with mutations and to the population without mutations?
    8·1 answer
  • All you need is in the photo ​
    6·1 answer
  • In order to run 200 m in 15 seconds, a runner must run at a speed of
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!