Multiple Choice
Which type of mutation results in the premature termination of translation of an mRNA molecule?
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15. Gene Expression
Mutations
Back15. Gene Expression
Mutations
- Multiple ChoiceWhich of the following are examples of external factors that can cause mutations?257views
- Multiple ChoiceHow can a missense mutation in a proto-oncogene lead to cancer?219views
- Multiple ChoiceWhich of the following describes a frameshift mutation?199views
- 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?
2745views18rank - Multiple Choice
A nonsense mutation:
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- 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 __________.1323views1rank
- Multiple ChoiceWhich type of mutation is least likely to affect protein function?1650views
- Multiple ChoiceA particular mutation had no effect on the polypeptide encoded by a gene. This mutation probably involves __________.1081views
- Multiple Choice
A single base substitution is LEAST likely to be deleterious (dangerous) when the change results in _____.
798views10rank - 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?
851views7rank - Textbook 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.764views
- Textbook Question
If a base-pair change occurs in DNA, this a. 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.
739views - Textbook 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.876views