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Sphinxa [80]
4 years ago
5

When DNA is copied, sometimes a new, incorrect base-pairing appears within the structure of a new DNA molecule replacing origina

l base pairs. This mistake is called a base-pair
Biology
2 answers:
elena-s [515]4 years ago
8 0

When DNA is copied, sometimes a new, incorrect base-pairing appears within the structure of a new DNA molecule replacing original base pairs. This mistake is called a base-pair mismatch due to replication error. This is known as DNA damage.

                         These kind of mismatch errors can be corrected by DAM (DNA adenine methylation) repair system. This repair system recognizes one of the two mismatched nucleotide to be corrected by methylation pattern. The non-methylated DNA strand in the hemi-methylated DNA progeny is recognized as the strand to be corrected by DAM repair system.

Anettt [7]4 years ago
8 0

Answer:

The answer is substitution. Hope this helps!!!

Explanation:

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vladimir2022 [97]

Answer:

D

Explanation:

d....................

8 0
3 years ago
_____________ originates in the squamous cells of the epithelium and can quickly spread to other body systems.​
Allushta [10]
Hey there!

I believe the answer is squamous cell carcinoma
6 0
3 years ago
The atlantic cod (gadus callarias) is a fish which lays about 5 000 000 eggs in its lifetime. On average, only two of these eggs
lozanna [386]

The atlantic cod (gadus callarias) is a fish which lays about 5 000 000 eggs in its lifetime. On average, only two of these eggs survive to become adult cod. This promote evolution because the environment selects the most evolved animals to survive that environment.

<h3>What is the evolutionary process?</h3>

Evolutionary processes aim, therefore, to generate greater adaptation of species in an environment. When new species of organisms are formed from gradual changes in preexisting species.

So although there are several eggs initially only those that survived the environment are able and evolved to reproduce, so the evolution of species is carried out.

See more about evolution of species at brainly.com/question/13194079

#SPJ12

3 0
2 years ago
What does it mean to be selectively or semi-permeable
vova2212 [387]

Answer:

Selectively permeable or semipermeable means specific substances are allowed to pass through the plasma membrane.

Explanation:

The plasma membrane is selectively or semipermeable in nature because the plasma membrane allow only specific molecules such as nonpolar substances or hydrophobic substances such as steroidshormone to pass through it and prevent the passage of polar solute molecules such as water,glucose.

   To transport these polar solutes across the membrane an additional protein is needed in case of transport of water channel protein is needed whereas in case of glucose transport carrier protein is required.

3 0
3 years ago
Read 2 more answers
Arrange the following list of eukaryotic gene elements in the order they would appear in the genome and in the direction travele
Leni [432]

Answer:

The alignment of the elements in the following sequence will take place in the eukaryotic genome:  

a. Promoter

b. Nucleotide to which methylated cap is added

c. 5 prime UTR

d. Initiation codon

e. Splice donor

f. Splice branch site

g. Splice acceptor

h. Stop codon

i. 3 prime UTR

j. Transcription terminator

k. Poly A addition site

After the process of splicing, the ultimate transcript will comprise the elements b, c, d, h, i. In eukaryotes, the RNA polymerase begins the process of transcription after it crosses the promoter region, and ceases at the transcription terminator. At the time of RNA processing, a 5 prime cap is supplemented to the transcript, splicing occurs, and a poly-A tail is supplemented. The 5 prime UTR and 3 prime UTR regions are found in the final transcript, that is, the mature RNA, however, are not translated.  

4 0
4 years ago
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