Mutatations Flashcards
1
Q
What are mutations ?
A
Changes to the genetic code
2
Q
When do mutations occur ?
A
When a chromosome isn’t quite replicated
3
Q
What re the different types of mutations?
A
- insertions
- deletions
- substitutions
4
Q
What are insertions?
A
When a new base is inserted into the DNA base sequence where it shouldn’t be
5
Q
What are deletions?
A
When a random base is deleted from the DNA base sequence
6
Q
What are substitutions?
A
When are a random base in DNA base sequence is changed to a different base
7
Q
Explain why the function of a protein may be affected by a gene mutation
A
Mutations change the DNA base sequence
This can alter the amino acids a base code for.
This can change the shape of the protein the amino acids make up
This alters it’s function
