8.1 (20) - Gene Expression Flashcards
1
Q
What is a gene mutation?
A
Any change to one or more nucleotide bases or any rearrangement of bases in DNA
2
Q
What are 6 types of gene mutation?
A
- Substitution of bases
- Deletion
- Addition
- Duplication
- Inversion
- Translocation
3
Q
What happens during substitution of bases?
A
A nucleotide is replaces by another of a different base
4
Q
What happens during deletion of bases?
A
A base is omitted from the sequence of nucleotides
5
Q
What happens during addition of bases?
A
6
Q
What happens during duplication of bases?
A
7
Q
What happens during inversion of bases?
A
8
Q
What happens during translocation of bases?
A
9
Q
What is a mutagenic agent?
Give 2 examples
A
An environmental factor that can increase the rate of mutation
Eg. chemicals and high energy ionising radiation
10
Q
What does cell differentiation mean?
A
