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Questions and Answers
What is the simplest type of mutation?
Which of the following is a type of mutation?
What is a mutation?
What type of mutation can lead to loss of function?
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What is the consequence of a frameshift mutation?
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What is a mutagen?
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What type of mutation results in a new codon that codes for the same amino acid as the wild type codon in that position?
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What type of mutation results in a new codon that codes for the same amino acid as the wild type codon in that position?
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What is a consequence of a mutation?
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What is a mutagen?
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What type of mutation involves substitutions that result in functionally different amino acids?
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What type of mutation involves substitutions of one nucleotide?
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What can increase the rate of mutation?
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What is the rate of mutation increased by?
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What type of mutation is the simplest type of mutation?
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Study Notes
- A mutation is a random change in genetic information.
- A heritable change in the genetic material may be neutral, beneficial, or harmful.
- Mutagen: Agent that causes mutations.
- Spontaneous mutations: Occur in the absence of a mutagen.
- Point mutations are the simplest type of mutation, involving substitutions of one nucleotide.
- Frameshift mutations involve a shift in the reading frame of a gene, and can lead to loss of function.
- Nonsense mutations involve substitutions that result in functionally different amino acids, and can lead to alteration or loss of protein function.
- Silent mutations result in a new codon that code for the same amino acid as the wild type codon in that position.
- Run-on mutations change the triplet stop codon to sense codon.
- Insertions and deletions are more significant mutations than substitutions.
- Mutations are rare events that can occur when DNA is replicating.
- Mutations can have a number of consequences, including the death of a cell.
- The rate of mutation can be increased by a number of factors, including carcinogenic chemicals and high-energy radiation.
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