A mutation has resulted in changes to both the size (number of amino acids) and the amino acid composition of the protein encoded by a gene. This mutation is most likely a (an) ---------.
A. Deletion of the promoter
B. Insertion or deletion of a base pair in an exon
C. Single missense mutation in the transcription region
D. A base substitution, which has changed the start codon to 5'ACG3'
E. Insertion or deletion of a base in the middle of an intron
A mutation has resulted in changes to both the size (number of amino acids) and the amino acid composition of the protein encoded by a gene. This mutation is most likely a (an) ---------.
| A. | Deletion of the promoter | |
| B. | Insertion or deletion of a base pair in an exon | |
| C. | Single missense mutation in the transcription region | |
| D. | A base substitution, which has changed the start codon to 5'ACG3' | |
| E. | Insertion or deletion of a base in the middle of an intron |
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Related questions
Due to a recessive mutation in gene A, amino acid âGluâ in position 25 of polypeptide A (the wild polypeptide) is replaced by âAlaâ. Individuals who are homozygous for the mutant allele (aa) donât have any phenotypic alterations. Based on this observation, which of the following IS TRUE?
| A. | The mutation has occurred in the promoter. | |
| B. | The mutation has occurred in one of the introns of the encoding gene. | |
| C. | The mutation was a base substitution in one of the exons of the gene, but has not changed the active site of the enzyme. | |
| D. | The mutation has occurred in a non-coding region of the genome. | |
| E. | The mutation was an insertion or deletion of a base pair in the second exon of the gene. |
