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katovenus [111]
3 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]3 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.

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Help<br> this is expected by 8:30
NNADVOKAT [17]

DNA is a nucleic acid molecule that undergoes a replication process to form a new daughter strand. The blue segment is the parental strand, and the yellow is the daughter strand.

<h3>What is replication?</h3>

Replication is the process of the central dogma that duplicates the copy of the parent strand into new daughter strands. The two helixes of the parent strand get separated to make the complimentary copy of the new strand.

The daughter DNA is semi-conservative and are complementary structure made from the duplication of the parent strand with the help of the replication enzymes.

Therefore, the daughter strands are the semi-conservative copies of the parental strand.

Learn more about replication here:

brainly.com/question/16464230

#SPJ1

7 0
2 years ago
Can someone please help me i don’t know the answer
zhenek [66]

Answer:

its b i already did it and i paused

7 0
3 years ago
Read 2 more answers
The cycads, a mostly tropical phylum of gymnosperms, evolved about 300 million years ago and were dominant forms during the age
ozzi

Answer:

poliinators and flagellated sperm

Explanation:

Cycads (phylum Cycadophyta) together with Ginkgophyta, Gnetophyta, Pinophyta, Pteridospermales and Cordaitales  belong to the gymnosperms (naked seed-producing plants). They are different than angiosperms which produce encased seeds within an ovary.

Cycads (but also Ginkgo) produce swimming sperm that is different than all other groups which produce sperm without swimming flagella.

Also, unlike other groups of gymnosperms, cycads have specialized  pollinators, beetls.

6 0
3 years ago
The brothers pictured below are identical twins. The boys in this picture look alike because their bodies contain identical carb
Romashka [77]

Answer:

nucleic acids.

Explanation:

The fusion of the sperm with the egg results in the formation of a zygote that develops into a new offspring. Twins refers to the two offspring which are a result of the same pregnancy. They are of two types. Monozygotic twins are a result of the single zygote (formed by the fusion of one egg with a single sperm) spiltting into two embryos forming the identical twins. Dizygotic twins are a result of two eggs fertilized with two different sperms forming the fraternal twins.

Identical twins are genetically simliar. The genetic material is derived from the same embryo and thus, the DNA of the identical twins are nearly identical. The spilitting of the embryo formed results in the separation of the same genetic material or identical DNA getting incorporated into the twins making them look alike in majority of the cases.

6 0
3 years ago
Read 2 more answers
The Joint Commission has developed standards for ambulatory clinics however the standards are only applicable to facilities who
Ugo [173]

Answer:

True

Explanation:

The joint commission is a non profit organization that examines healthcare organizations and provides accreditation. Even though it's services are employed by the government it is not monopolistic there are other organizations that also provide accreditation whose standards are also developed for who they have accredited

6 0
3 years ago
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