15. Gene Expression
Mutations
15. Gene Expression
Mutations
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- 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?
2124views15rank - Multiple Choice
A nonsense mutation:
1821views14rank - Multiple ChoiceUltraviolet (UV) radiation is damaging to cells because it __________.848views
- Multiple ChoiceA point mutation in which a single base pair is inserted or deleted from DNA is called a(n) __________.1132views
- Textbook QuestionIf 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.650views
- 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.
589views - 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.733views
- Textbook QuestionA geneticist found that a particular mutation had no effect on the polypeptide encoded by a gene. This mutation probably involved a. deletion of one nucleotide. b. alteration of the start codon. c. insertion of one nucleotide. d. substitution of one nucleotide.1261views