Which of the following types of mutation resulting in an error in the mRNA?

Which of the following types of mutation resulting in an error in the mRNA?

The correct option is b. Frameshift mutation results in an error in the mRNA just after the AUG or methionine start of translation and this mutation has a severe effect on polypeptide products.

Why might a point mutation in DNA make a difference in the level of protein’s activity group of answer choices?

Why might a point mutation in DNA make a difference in the level of a protein’s activity? It might substitute a different amino acid in the active site.

What is the complementary messenger RNA sequence for the DNA sequence?

mRNA → DNA For converting a sequence from mRNA to the original DNA code, apply the rules of complementary base pairing: Cytosine (C) is replaced with Guanine (G) – and vice versa. Uracil (U) is replaced by Adenine (A) Adenine (A) is replaced by Thymine (T)

Which of the following types of mutations would result in a frameshift mutation?

A frameshift mutation is a genetic mutation caused by a deletion or insertion in a DNA sequence that shifts the way the sequence is read. A DNA sequence is a chain of many smaller molecules called nucleotides.

Which of the following are types of mutations?

There are three types of DNA Mutations: base substitutions, deletions and insertions.

• Base Substitutions. Single base substitutions are called point mutations, recall the point mutation Glu —–> Val which causes sickle-cell disease.
• Deletions.
• Insertions.

Which of the following types of mutations in a gene would you expect to result in a truncated shorter polypeptide that the gene encodes?

This change would have no effect on the protein’s structure, and is thus called a silent mutation. A missense mutation results in a different amino acid being incorporated into the resulting polypeptide.

Is mRNA complementary to coding strand of DNA?

The opposite strand (that is, the strand with a base sequence directly corresponding to the mRNA sequence) is called the coding strand or the mRNA-like strand because the sequence corresponds to the codons that are translated into protein. The lower strand is the strand that is complementary to the mRNA.

How is mRNA translated into DNA?

Starts here2:33Decode from DNA to mRNA to tRNA to amino acids – YouTubeYouTube

What type of mutation alters the reading frame in the mRNA downstream of the mutation?

Explanation: A frameshift mutation indicates that the reading frame of the sequence in altered, resulting in production of different codons downstream of the mutation.

Which effect would a mutation in mRNA have on the production of proteins?

Point mutations can cause serious changes to an organism if they change the way a protein works. A mutation in DNA alters the mRNA, which in turn can alter the amino acid chain. A base substitution may have three different effects on an organism’s protein.

What are the 3 types of mutation?

What is missense mutation?

Missense mutation: This type of mutation is a change in one DNA base pair that results in the substitution of one amino acid for another in the protein made by a gene (Figure 1).

What is a silent mutation?

Silent mutation: Silent mutations cause a change in the sequence of bases in a DNA molecule, but do not result in a change in the amino acid sequence of a protein (Figure 1).

How does a frameshift mutation affect a reading frame?

A reading frame consists of groups of 3 bases that each code for one amino acid. A frameshift mutation shifts the grouping of these bases and changes the code for amino acids. The resulting protein is usually nonfunctional.

What is a nonsense mutation?

Nonsense mutation: A nonsense mutation is also a change in one DNA base pair. Instead of substituting one amino acid for another, however, the altered DNA sequence prematurely signals the cell to stop building a protein (Figure 1). This type of mutation results in a shortened protein that may function improperly or not at all.