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How is it possible for gene with a mutation in coding region to encode a polypeptide with the same amino acid sequence as the nonmutant gene?
If the mutant codon still codes for the same amino acid (a silent mutation). For example: GUU, GUC, GUA and GUG all code for the amino acid Valine. So if the mutation changed the codon from GUU to GUA - Valine would still be produced and therefore the polypeptide will be identical.
Why does mrna mutation affect the amino acid sequence?
The codon UGU codes for the amino acid Cysteine. The codon UGG codes for the amino acid Tryptophan. Therefore the mutation will cause the amino acid Cysteine to be replaced with Tryptophan. These amino acids are quite different, and the final shape of the protein could be changed as a result. This could affect the function of the protein.
When a nitrogenous base is inserted or delete how does that affect the amino acid sequence?
The amino acid sequence is shifted, and this kind of mutation is called a frame shift mutation. All of the amino acid sequence after the mutation will be changed, which will cause a change in shape of the protein, which will then probably result in a nonfunctional protein, since the shape of a protein determines its function.
What type of mutation in the DNA leads to a single change in the amino acid sequence of the protein?
Yes, it already has by changing the amino acid you have a mutation. That one amino acid counld be in the active site of an enzyme and that one amino acid being changed could result in loss of function or reduction in function of the enzyme. Sickle cell animea is caused by a single such amino acid substiution.
What would the amino acid be if there was a mutation and UAG was changed ti UCG?
UAG is a stop codon, which signals the termination of protein synthesis, while UCG codes for the amino acid serine. If a mutation changes UAG to UCG, the result would be the incorporation of serine at that position in the protein instead of terminating the translation. This could lead to a longer protein with potentially altered function depending on the role of the affected amino acid.
How is it possible for gene with a mutation in coding region to encode a polypeptide with the same amino acid sequence as the nonmutant gene?
If the mutant codon still codes for the same amino acid (a silent mutation). For example: GUU, GUC, GUA and GUG all code for the amino acid Valine. So if the mutation changed the codon from GUU to GUA - Valine would still be produced and therefore the polypeptide will be identical.
Why does mrna mutation affect the amino acid sequence?
The codon UGU codes for the amino acid Cysteine. The codon UGG codes for the amino acid Tryptophan. Therefore the mutation will cause the amino acid Cysteine to be replaced with Tryptophan. These amino acids are quite different, and the final shape of the protein could be changed as a result. This could affect the function of the protein.
When a nitrogenous base is inserted or delete how does that affect the amino acid sequence?
The amino acid sequence is shifted, and this kind of mutation is called a frame shift mutation. All of the amino acid sequence after the mutation will be changed, which will cause a change in shape of the protein, which will then probably result in a nonfunctional protein, since the shape of a protein determines its function.
What type of mutation in the DNA leads to a single change in the amino acid sequence of the protein?
Yes, it already has by changing the amino acid you have a mutation. That one amino acid counld be in the active site of an enzyme and that one amino acid being changed could result in loss of function or reduction in function of the enzyme. Sickle cell animea is caused by a single such amino acid substiution.
What if a mutation caused a change in the code the message read GGA instead of GGC?
The amino acid that is produced by UGG would be different than the amino acid produced by UGC.
How does a mutation change a codon for one amino acid into a different codon for the same amino acid?
A mutation can change a codon for one amino acid into a different codon for the same amino acid through a process called silent mutation. This type of mutation occurs when a change in the DNA sequence does not alter the amino acid that is coded for, resulting in the same protein being produced.
What is a genetic mutation that does not result in a change in the amino acid sequence of the resulting protein?
It is neutral mutation. Codons are made up of 3 base pairs. This gives 64 different combinations, but there are only 20 amino acids, so some different codons will code for the same amino acid. When the base pair that is changed doesn't cause a change in the amino acid it codes for, then ultimately nothing happens
What happens if only one amino acid is coded incorrectly?
If only one amino acid is coded incorrectly in a protein sequence, it may result in a missense mutation. This could potentially lead to a change in the structure and function of the protein. The impact of the mutation would depend on the specific amino acid involved and its location within the protein.
What might the result of a mutation of DNA in which a triplet code such as CAC now says CTC?
The mutation would result in a change in the amino acid sequence during protein synthesis. In this case, the amino acid encoded by the codon CAC is histidine, while the codon CTC encodes for leucine. This mutation can lead to changes in the protein's structure and function, potentially altering its properties.
Which type of mutation results in the formation of a protein with one incorrect amino acid-?
A point mutation, specifically a missense mutation, is responsible for the formation of a protein with one incorrect amino acid. This type of mutation involves a single nucleotide change in the DNA sequence, leading to the substitution of one amino acid in the protein.
What is a Missence mutation?
A mutation that causes the code for the wrong amino acid (apexvs.com)
What would be the effect of a mutation that changed the c of the anticodon to a g?
The effect of the mutation is; there would be another amino acid that may form due to the change in sequence of the anticodon. change in the sequence of anticodon may result to different amino acid that may form.
