A mutation changes the codon CAA to UAA. This is an example of __ A. transition,...

A mutation changes the codon CAA to UAA. This is an example of __ A. transition, nonsense mutations B. transversion, silent mutations C. transition, missense mutations D. transversion, missense mutations E. transition, silent mutations F. transversion, nonsense mutations

Expert Solution

Answer: option A. Transition, nonsense mutation.

Explanation:

Mutation causes changes in the nucleotide bases in DNA or RNA sequences. In the given mutation the codon 'CAA' changed into 'UAA'. The codon CAA codes for the amino acid residue glutamine, whereas UAA is a stop codon. The occurrence of the stop codon prior to expected stop codon due to the mutation causes premature termination of the translation process and produces truncated, non-functional and incomplete protein. This type of mutation is called nonsense mutation. Thus the mutation occurred here is nonsense mutation.

Transition represents a point mutation in which a purine residue (A and G) is mutated into another purine or a pyrimidine residue (C, U and T) to another pyrimidine residue. Transversion is also a point mutation in which a purine residue is changed to a pyrimidine residue and vice versa. In the given mutation, 'C' is changed into 'U', both are pyrimidine derivatives, hence, it is a transition.

Silent are neutral mutations which does not cause any observable effects.

Missense mutation is a type of mutation where a change in the single nucleotide results in a codon coding for different amino acid.

gladiator answered 2 years ago

19.A mutation that changes an amino acid-coding codon to a stop codon is classified as: A...

19.A mutation that changes an amino acid-coding codon to a stop codon is classified as: A – Silent B – Missense C – Nonsense D – Neutral 20.Spontaneous mutations can arise from: A – All answers are correct B – A base gets damaged C – DNA polymerase inserts an incorrect nucleotide D – A loop occurs during replication 21.DNA Repair Systems: A – Counteract spontaneous and induced mutations B – Counteract induced mutations only C – Counteract amino acid...

What is a codon? What is silent mutation?

QUESTION 1 A single base change mutation at the third position in a codon for a...

QUESTION 1 A single base change mutation at the third position in a codon for a protein encoding gene would most often cause a ______. ( ) Deletion mutation ( ) Insertion mutation ( ) Nonsense mutation ( ) Silent mutation ( ) Missense mutation 3 points [Save Answer] QUESTION 2 Which of the following correctly ranks a point mutations effect on a protein from most severe mutation to the least? ( ) Missense, silent, nonsense ( ) Silent, nonsense,...

1.A single nucleotide mutation in the third position of a codon more often than in the...

1.A single nucleotide mutation in the third position of a codon more often than in the second or first position a) has no effect on the amino acid sequence of the encoded protein. b) alters the reading frame of the mRNA. c) changes an amino acid in the encoded protein. d) introduces a stop codon into the mRNA. 2. The synthesis of new DNA requires the prior formation of RNA oligonucleotides to serve as primers. This latter observation is evidence...

A single substitution mutation has altered a codon from an “AGU” to an “AGC”. What effect...

A single substitution mutation has altered a codon from an “AGU” to an “AGC”. What effect will this have on the protein? 1. This would be a missense mutation and NOT affect the function of the protein 2. This would be a nonsense mutation and affect the function of the protein 3. This would be a missense mutation and affect the function of the protein 4. This would be a silent mutation and NOT affect the function of the protein...

1) a mutation occurs in which an AAA codon, which signifies lysine, into AGA which signifies...

1) a mutation occurs in which an AAA codon, which signifies lysine, into AGA which signifies a chemically similar amino acid arginine. This is an example of a ____ mutation? a) conservative nonsynomous b) frameshift c) nonsense d) conditional e) silent It has to be neutral mutation, but the option for neutral is not given... would it be conditional? 2) Which of the following types of inheritance could account for an affected male having all affected daugters but no affected...

Question 20 An example of a suppressor mutation would be A mutation that suppresses cell growth...

Question 20 An example of a suppressor mutation would be A mutation that suppresses cell growth An intergenic mutation that increases the activity of a protein performing a different function as the mutated protein An intragenic mutation that restores the inactive protein's structure An intergenic mutation that activates a transcription factor that increases the expression of a normal protein Question 23 The mechanism for reactive oxygen species to cause mutation is the reactive oxygen species stabilize different tautomeric forms of...

Question 1. A strain of E. coli carries a substitution mutation causing the terminator codon 5’-UAG-3’...

Question 1. A strain of E. coli carries a substitution mutation causing the terminator codon 5’-UAG-3’ to occur at an interior position in a particular type of mRNA. This strain also carries a suppressor mutation that alters the anti-codon of a type of tRNA molecule so that it reads 3’-AUC-5’. This type of tRNA reads this terminator codon and inserts the amino acid tyrosine. a.What effect would the presence of both of these mutations together have on the polypeptide translated...

Describe each of the below mutations AND provide an example of each. Point mutation Missense mutation...

Describe each of the below mutations AND provide an example of each. Point mutation Missense mutation Nonsense mutation Silent mutation Transition Transversion Frameshift mutation

How can mutation cause disease? What is an example of it?

Question