8.1 - DNA base sequences and proteins Flashcards
1
Q
When might DNA mutations arise?
A
during DNA replication
2
Q
What are the 6 types of mutation?
A
- addition/insertion
- deletion
- substitution
- duplication
- inversion
- translocation
3
Q
What can mutations cause?
A
a frame shift
4
Q
Causes of mutation
A
- mutagenic agents
- high energy radiation
- spontaneous errors in DNA replication
5
Q
Define mutagenic agent
A
substance which increases rate of gene mutation
6
Q
Explain how a single base substitution can cause a change in the structure of a polypeptide
A
- changes primary structure
- changes hydrogen bonds
- alters tertiary structure
