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
boyakko [2]
3 years ago
5

Why are there more mutations in RNA

Biology
2 answers:
Nina [5.8K]3 years ago
8 0

Answer:

Average mutation rates in RNA viruses are estimated to be about 100 times higher than those in DNA viruses for a couple of reasons.

Replication errors

The enzymes that occur in RNA viruses and participate in copying viral genomes is a key reason for this difference. These enzymes lack the built-in capabilities to recognize DNA damage that enzymes in most organisms have.

Retroviruses take their RNA-based genome, use it to make DNA within a host cell and use the new DNA to replicate more viral RNA. This process is error-prone and results in an unusually high mutation rate. HIV, for example, has a mutation rate of 3.4 x 10^-5 errors per base pair each time its genome goes through this process. Retroviruses have higher mutation rates than most other viruses, including other RNA viruses.

Another interesting difference between RNA and DNA mutations involves the bases thymine, cytosine and uracil, typically represented as T, C and U in the DNA code. DNA uses thymine, while RNA uses uracil instead. Cytosine can sometimes spontaneously change to uracil by deamination. In DNA, this error will be detected because DNA doesn't ordinarily contain uracil; the cell has enzymes that can recognize and fix the substitution. In RNA, however, this kind of error cannot be detected because RNA ordinarily contains both cytosine and uracil bases. So, some mutations are less likely to be recognized and repaired in RNA viruses, and the mutation rate increases.

umka21 [38]3 years ago
6 0

Answer:

There are more mutations in them because in viruses they allow them to evolve to survive drugs and evolve more rapidly.

Explanation:

You might be interested in
Part E
Colt1911 [192]

Answer:

The subject definition has always been listed in the overview section elsewhere here.

Explanation:

Something you are attempting to calculate is a variable. It can be something, such as things, quantities of time, emotions, actions, or thoughts. If you're researching how people here feel regarding specific tv programs, television shows as well as emotions are the factors throughout the analysis. If you are learning how various forms of fertilizer influence how tall plants develop, fertilizer form and plant height seem to be the variables.

<u>Independent Variable</u>

  • The independent variable seems to be the variable whom the adjustment is not influenced throughout the analysis by every other variable. Usually, the researcher herself needs to modify the independent variable or it adjusts by itself because nothing influences or adjusts this one in the project.

<u>Dependent Variable</u>

  • Throughout the analysis, the dependent variable that's what's being examined but instead evaluated. As something of a consequence of the modifications to something like the independent variable, that's what modifications.
5 0
3 years ago
When a virus invades a host the most common threat is
mylen [45]
The answer is c because we just learned about it today. Viruses destroy cells
6 0
3 years ago
How many chromosomes does a human body cell have? how many chromatids does a human body cell have?​
alekssr [168]
Chromosomes = 46
Chromatides= 92
4 0
2 years ago
Just considering one locus (a specific location on a DNA strand), evidence at a crime scene shows a genotype of 5, 9 STR repeats
marta [7]

Answer:

0.1 x 0.3 = 0.03 = 3%

Explanation:

Assuming a process of random mating in the population, it is possible to infer that the genotype frequencies will be the product of the allele frequencies. The random mating is one of the postulates of the Hardy-Weinberg Law, which is widely used in population genetics to estimate genotypic frequencies when populations are expected to be in an equilibrium state (it is also expected by default in human populations).  In this case, the genotype frequencies will be certainly low (3%), thereby this locus may be useful to investigate a police case.

4 0
3 years ago
You believe a victim may have a closed abdominal injury. what is the next care step you should take?
Yuki888 [10]
If you suspect that a victim has closed abdominal injury, the best thing to do is to carefully position the victim on his or her back and loose any tight fitting clothing that the person may have on. 
Positioning this victim like this will prevent the risk of causing further injury.
5 0
3 years ago
Other questions:
  • Warren thinks that a fetus is a person with a right to life from the moment of conception.
    7·1 answer
  • What is a question about science
    14·1 answer
  • Why wouldn't glass be considered the mineral
    10·1 answer
  • Heart disease is a noncommunicable disease because
    15·2 answers
  • How does the author organize the text or ideas in the article check all that apply a by using paragraphs to focus on ideas be by
    13·2 answers
  • What would happen if a major predator was removed from the food web?
    8·1 answer
  • What is located on chromosomes and carry hereditary instructions?
    8·1 answer
  • According to the computer model mode bye gilbert and kittel what will happen if world warm by 4'c
    6·1 answer
  • The heart is Called the ___ muscle<br> A. striated <br> B. cardiac<br> C. smooth
    12·2 answers
  • 1) The layer of Earth below the crust and above the outer core is
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!