Answer:
The type of mutation responsible for changing a base in the mRNA strand, without changing the coding aminoacid or protein, is called a <u>silent</u> mutation.
Explanation:
In a silent mutation occurs the change of a nitrogenous base in one of the codons that encodes an aminoacid, without changing the aminoacid or altering the structure or function of the protein to be synthesized.
In this type of mutations the change of the base does not mean the change of the aminoacid, because some aminoacids can be coded with more than one codon. In the case of Leucine, the codons that encode it are CUU, CUC, CUG or CUA, so even if a base changes, the final protein will be the correct one.
For the other options:
- <u><em>Missense</em></u><em>: the change of the base in the DNA chain implies the change of the codon in the mRNA and of the encoded aminoacid, in that way a structural and functional alteration of the synthesized protein occurs. </em>
- <u><em>Nonsense</em></u><em>: the change in the nitrogenous base in the DNA leads to the coding of a termination codon, so that the protein is ultimately incomplete.</em>
- <u><em>Insertion</em></u><em>: in this case there is the addition of more nitrogenous bases to the DNA chain, with respect to the original one.</em>
Answer:
I and II
Explanation:
I. irrigation of cropland & II. harvest of biomass for energy
A: Viruses, Prokaryotic, and eukaryotic cell all have dna as their genetic material
Answer:
<em><u>The answer is</u></em>: <u>Folded, fault block, volcanic.</u>
Explanation:
<u>The main types of mountains are</u>: Folded, fault block, volcanic and upwarped.
Folded mountains. These types of mountains tend to change constantly depending on their complexity, however they always conform to the basic type.
Volcanic mountains. It is about the mountains that come to form when a volcano erupts.
Domes. These mountains are created by domed strata, as a granitic intrusion is generated.
Mountains in block. These are large-scale structural failures. These inside are usually folded and tend to have failures.
Plateau mountains. These are created when there is activity in the deepest of the earth's crust. They are formed with the deep channels that the current water produces, where the rivers can cut any table regardless of their depth, thus producing high-rise mountains.
<em><u>The answer is</u></em>: <u>Folded, fault block, volcanic.</u>
