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artcher [175]
3 years ago
6

Which is a point mutation? frameshift insertion deletion missense

Biology
2 answers:
Temka [501]3 years ago
7 0

A missense mutation is a point mutation.

Further Explanation:

A point mutation is an alteration that only changes a single nucleotide of nucleic acid. It mainly involves the exchange of one base for another. It also includes deletions or insertions of a single nucleotide. As far, the point mutation is a common type of mutation.

Single base replacement can be divided into two:

  • Transitions: It exchanges nucleotide from pyrimidine to pyrimidine and purine to purine.
  • Transversions: It exchanges nucleotide from purine to pyrimidine.

When a point mutation affects the coding region, it can be allocated to one of the following group, according to the result of the mutation:

  • Silent mutation: Mainly, it does not alter the related amino acid, and thus has no assessable effect on the genome.
  • Missense mutation: it changes the related amino acid, and thus have an effect on the genome. If the properties of the amino acid (a charge, polarity, etc.) stay the same, then the transformation is called conservative, in which case it may not affect the protein's function. Also, the resultant mutation is called non-conservative, and it affects the protein function and end result in disease.
  • Nonsense mutation: It exchanges the stop codon for a natural codon, that causes the protein's truncation. Generally, this shortening also leads to the loss of the protein's function.

Learn more:

  1. Learn more about mitosis  <u>brainly.com/question/6462270</u>
  2. Learn more about the menstrual cycle  <u>brainly.com/question/723944 </u>
  3. Learn more about meiosis<u> brainly.com/question/94813</u>

Answer Details:

Grade: High School

Subject: Biology

Chapter: DNA repair and mutation

Keywords:  

Mis sense mutation, nonsense mutation, non- conservative, transition, transversion, purine, pyramidine, mutation, disease, codon.

Otrada [13]3 years ago
5 0
The definition of a point mutation states that a mutations is a point mutation if it affects only one or few nucleotides in the DNA product. We have that DNA is read in frames of 3 nucleotides. If the starting point of one frame is changed, then all frames are changed because the frames are grouped by 3 nucleotides. We have that frameshift mutations not point mutations because a shift in the reading frame affects how the rest of the DNA is read. This is the case for insertion and deletion of a nucleotide; it changes the number of nucleotides and shifts the reading frame by 1. A missense mutation is a point mutation though; it involves substituting a nucleotide with a wrong one. It involves an error only in one place and it does not change the reading frame so it affects only one nucleotide.
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Answer:

B) the mobility of their hosts

Explanation:

A pathogen that attacks an oak trees and a pathogen that attacks humans doesn't really have that big of a difference, but on the other side we can see that the pathogen that attacks the oak trees is spreading out much less and over much smaller territory than the pathogen attacking humans. The main reason behind this is the mobility of the host of the pathogen and where the host of it lives. In the case with the oak trees, the pathogen will be migrating very slowly over smaller distance because there's only certain places where the oak trees live, and also they are not mobile, and the pathogen will be able to spread out only through their seeds and cones which is a slow process. On the other hand, the pathogen attacking humans will manage to spread out very quickly over very large area because there are humans living in lot of places, their numbers are high, and their mobility is easy and quick over large distances, so the pathogen will travel with its host easily for hundreds or thousands of kilometers and then spread out in another place far away.

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<h3>What is an organism?</h3>

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