Multiple Choice
A point mutation in which a single base pair is inserted or deleted from DNA is called a(n) __________.
15. Gene Expression
Mutations
Back15. Gene Expression
Mutations
- Multiple Choice
Which of the following mutations, occurring just after the start codon in the mRNA is likely to have the most serious effects on the polypeptide product?
- Multiple Choice
A nonsense mutation:
- Multiple ChoiceUltraviolet (UV) radiation is damaging to cells because it __________.
- Multiple ChoiceA virus infects a cell and randomly inserts many short segments of DNA containing a stop codon throughout an organism's chromosomes. This will probably cause __________.
- Multiple ChoiceWhich type of mutation is least likely to affect protein function?
- Multiple ChoiceA particular mutation had no effect on the polypeptide encoded by a gene. This mutation probably involves __________.
- Multiple Choice
A single base substitution is LEAST likely to be deleterious (dangerous) when the change results in _____.
- Multiple Choice
A section of DNA has this base sequence: AGCGTTACCGT. A mutation in this DNA strand results in this base
sequence: AGGCGTTACCGT. What type of mutation does this change represent?
- Open QuestionIf a base-pair change occurs in DNA, thisa. is a mutation.b. would be a mutation only if it falls in a protein-coding part of a gene.c. would be a mutation only if it falls in a transcribed part of the genome.d. is not a mutation, because only one base pair has been altered.
- Open QuestionIf a base-pair change occurs in DNA, thisa. is a mutation.b. would be a mutation only if it falls in a protein-coding part of a gene.c. would be a mutation only if it falls in a transcribed part of the genome.d. is not a mutation, because only one base pair has been altered.
- Open QuestionImagine discovering a loss-of-function mutation in a eukaryotic gene. You determine the gene's nucleotide sequence from the start site for transcription to the termination point of transcription and find no differences from the wild-type sequence. Explain where you think the mutation might be and how the mutation might be acting.