Multiple Choice
Which type of mutation is possible due to the redundant nature of the genetic code?
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17. Mutation, Repair, and Recombination
Types of Mutations
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Which of the following best describes how a genetic mutation occurs?
A
The synthesis of proteins from mRNA templates
B
The separation of homologous chromosomes during meiosis
C
A change in the nucleotide sequence of DNA
D
The replication of DNA without any errors
Verified step by step guidance1
Understand that a genetic mutation refers to a change in the DNA sequence, which can affect how genes function.
Recognize that protein synthesis from mRNA templates is a process called translation and does not cause mutations; it uses the existing DNA code to make proteins.
Know that the separation of homologous chromosomes during meiosis is part of cell division and genetic recombination, but it does not directly cause mutations in the DNA sequence.
Realize that DNA replication is the process of copying DNA before cell division; while errors can occur during replication, the phrase 'without any errors' means no mutation happens in that case.
Conclude that the best description of how a genetic mutation occurs is 'a change in the nucleotide sequence of DNA,' since mutations are defined as alterations in the DNA code.
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