Mutations and their effects Quiz
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5 questions, one answer each
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1. A mutation deletes one base from a gene. Which statement is correct?
- A. Only one amino acid changes
- B. The code is read in the same triplets
- C. All triplets downstream of the deletion are changed
- D. The mutation is a substitution
2. Which of the following increases the rate of mutation?
- A. A mutagenic agent such as ionising radiation
- B. A degenerate genetic code
- C. DNA replication
- D. Transcription
3. A substitution changes the triplet CTT to CTC, and both code for leucine. This is possible because the genetic code is:
- A. Overlapping
- B. Universal
- C. Degenerate
- D. Non-coding
4. Which mutation is most likely to result in a shorter polypeptide?
- A. A substitution that creates a stop codon
- B. A silent substitution
- C. A substitution to a similar amino acid
- D. Duplication of three bases
5. Which type of mutation moves a group of bases to a different chromosome?
- A. Inversion
- B. Duplication
- C. Translocation
- D. Addition