Multiple Choice
Which of the following is an example of an induced mutation?
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17. Mutation, Repair, and Recombination
Induced Mutations
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Which of the following mutagens alters base affinities by adding an alkyl group?
A
Base analogs
B
Alylating agents
C
Intercalating agents
D
UV light
Verified step by step guidance1
Understand the concept of mutagens: Mutagens are agents that cause changes in the DNA sequence, leading to mutations.
Learn about alkylating agents: These are chemicals that add alkyl groups (such as methyl or ethyl groups) to DNA bases, altering their base-pairing properties.
Recognize the effect of alkylating agents: By adding alkyl groups, these agents can change the affinity of bases, potentially leading to incorrect base pairing during DNA replication.
Differentiate between types of mutagens: Base analogs mimic normal bases but do not alter base affinities by adding alkyl groups. Intercalating agents insert themselves between DNA bases, causing structural distortions. UV light causes thymine dimers, not alkylation.
Identify the correct answer: Alkylating agents are the mutagens that alter base affinities by adding an alkyl group, as opposed to the other options listed.
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