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A silent point mutation is a change in a DNA sequence that does not alter the amino acid sequence of the resulting protein. This often occurs due to the redundancy of the genetic code, where multiple codons can code for the same amino acid. For instance, both GAA and GAG codons code for glutamic acid, so a mutation from GAA to GAG would be a silent mutation. Thus, any codon that codes for the same amino acid as the original codon can be considered as coding for the same silent point mutation.
What else can I help you with?
If a strand of DNA with the sequence TGA mutated to GCA would it be a silent or missense mutation?
Both a silent and missense mutation is a change in one nucleotide. However, a silent mutation still codes for the same amino acid, but a missense mutation codes for a different amino acid. This means that a silent mutation will have no affect on the resulting protein, but a missense mutation will. Still, it is not guaranteed that a a missense mutation will result in a disfunction of created protein, as long as it is not occurring in the activation site.
What change to this sequence would indicate a silent mutation?
A silent mutation occurs when a change in the DNA sequence does not alter the amino acid sequence of the resulting protein. This can happen through a substitution of a nucleotide that still codes for the same amino acid due to the redundancy of the genetic code. For example, if the original sequence is "GAA" (which codes for glutamic acid) and it changes to "GAG," this would represent a silent mutation since both codons code for the same amino acid. Thus, the change in the sequence that doesn't affect the protein's amino acid sequence indicates a silent mutation.
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.
What type of mutation is likely to have the least effect on an organism?
A silent mutation, where a change in the DNA sequence does not result in a change to the amino acid sequence of the protein, is likely to have the least effect on an organism. This is because the protein produced is unaffected, and therefore the organism's functioning remains unchanged.
Which base substituion would more likely be a silent mutation?
Some subsitituations are called silent mutation because owing to the reduncancy of the genetic code, they have NO EFFECT on the coded protien.. and there you got -- Silent mutation by base-pair substition.. Hope that helps.. Got it out of my AP Biology Textbook.
If a strand of DNA with the sequence TGA mutated to GCA would it be a silent or missense mutation?
Both a silent and missense mutation is a change in one nucleotide. However, a silent mutation still codes for the same amino acid, but a missense mutation codes for a different amino acid. This means that a silent mutation will have no affect on the resulting protein, but a missense mutation will. Still, it is not guaranteed that a a missense mutation will result in a disfunction of created protein, as long as it is not occurring in the activation site.
Which mutation would not change the remainder of the reading frame of a gene sequence that follows the mutation?
A silent mutation, where a nucleotide substitution results in a codon that codes for the same amino acid, would not change the remainder of the reading frame of a gene sequence. This is because the amino acid sequence produced by the altered codon remains the same.
What change to this sequence would indicate a silent mutation?
A silent mutation occurs when a change in the DNA sequence does not alter the amino acid sequence of the resulting protein. This can happen through a substitution of a nucleotide that still codes for the same amino acid due to the redundancy of the genetic code. For example, if the original sequence is "GAA" (which codes for glutamic acid) and it changes to "GAG," this would represent a silent mutation since both codons code for the same amino acid. Thus, the change in the sequence that doesn't affect the protein's amino acid sequence indicates a silent mutation.
Why are there times when a point mutation in a DNA base sequence will be minor or neutral and will NOT have a negative affect on the function of the protein for which it codes?
A point mutation may be silent if it results in a codon that codes for the same amino acid (due to redundancy in the genetic code) or if it occurs in a non-coding region of the DNA. Additionally, some amino acid changes may not significantly alter the structure or function of the protein, especially if the new amino acid has similar properties to the original one.
Why is is it possible for a point mutation to have no affect on the protein produced?
A point mutation can have no effect on the protein produced if it occurs in a non-coding region of the gene, such as an intron. In coding regions (exons), silent mutations can also occur where the mutation leads to a codon that still codes for the same amino acid, preserving the protein's function. Additionally, some amino acid substitutions might not impact the protein's structure or function due to redundancy in the genetic code or similarities in amino acid properties.
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 is a silent mutation called silent?
a mutation that does not affect protein production.
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 type of mutation is likely to have the least effect on an organism?
A silent mutation, where a change in the DNA sequence does not result in a change to the amino acid sequence of the protein, is likely to have the least effect on an organism. This is because the protein produced is unaffected, and therefore the organism's functioning remains unchanged.
Which base substituion would more likely be a silent mutation?
Some subsitituations are called silent mutation because owing to the reduncancy of the genetic code, they have NO EFFECT on the coded protien.. and there you got -- Silent mutation by base-pair substition.. Hope that helps.. Got it out of my AP Biology Textbook.
A molecule of mRNA with the sequence GGUCAUCACUAU experienced a point mutation that caused the sequence to become GGUUAUCACUAU. Which of the following terms describes this type of mutation?
The mutation described is a "silent mutation." This term is used because the change from G to U in the second position of the sequence does not alter the resulting amino acid due to the redundancy in the genetic code. Specifically, both GGU and GGU (the original and mutated sequences) code for the same amino acid, glycine. Therefore, the mutation does not affect the protein's sequence or function.
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
