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german
4 years ago
14

Figure 1 represents a segment of DNA. Radiation can damage the nucleotides in a DNA molecule. To repair some types of damage, a

single nucleotide can be removed from a DNA molecule
and replaced with an undamaged nucleotide. Which of the four labeled bonds in Figure 1 could be broken to remove and replace the cytosine nucleotide without affecting the biological
information coded in the DNA molecule?
Biology
1 answer:
Ne4ueva [31]4 years ago
6 0

Answer:

Explanation:

This question is incomplete. However, what is described in this question is a method of DNA damage repair mechanism. The method described is called base excision repair. Generally, glycosylases play important roles in base excision repair (as they detect and remove these damaged bases).

One thing that can be considered while identifying the bond to be broken is the codon that will be formed after the removal of base. If this codon (a three base sequence) will still produce the same protein as when a normal cytosine was present.

NOTE: During this base excision repair, a glycosylase will detect and remove the damaged cytosine. Once removed, the remaining nucleotide backbone (of the removed cytosine) is also removed and the gap is filled and sealed by other enzymes in this repair mechanism.

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8 0
3 years ago
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8 0
3 years ago
Please Help!!
Alex

Answer:

1. cell wall, chloroplasts

2. A plant cell is rectangular, while an animal cell is circular. This is because of the cell wall.

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6 0
4 years ago
If you have a density of 100kg /L and a mass of 1000 units , tell me the following : First what are the mass units
vazorg [7]

Answer:

Mass units are equal to Kg

Explanation:

As per the requirement of the question, the data provided to compute the mass units is

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7 0
3 years ago
I need to know the correct answer
WINSTONCH [101]
2 that us the answer to your question
4 0
3 years ago
Read 2 more answers
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