Causes of Mutations
Biology: AQA A Level, topic 8.1.3
Causes of Mutations
Mutations can be caused by a number of factors. Some examples are:
DNA replication
- When DNA is replicated, the bases in the DNA sequence are read and copied.
- There can be errors in the replication process. These errors cause mutations.
- Mutations caused in DNA replication are spontaneous.
Mutagenic agents
- Mutagenic agents can increase the rate at which mutations occur.
- E.g. Ionising radiation and ultraviolet radiation.
Test yourself on Causes of Mutations
Which of these is NOT a cause of mutations?
Which of the following statements about mutations are true?