Mutations Flashcards
1
Q
How is a mutation caused?
A
By random mistakes in DNA replication or by environmental influences like UV Rays or chemicals
2
Q
How are genetic disorders caused?
A
By changes to genes or chromosomes that result In Proteins not being expressed or expressed proteins not functioning properly
3
Q
What is a point mutation?
A
A single gene mutation
4
Q
Give 3 facts about a point mutation
A
It’s the least harmful mutation
Change of a single base in a DNA sequence
Worst that can happen is that an amino acid In a protein changes
5
Q
Give an example of a point mutation
A
Sickle cell anemia
6
Q
What happens in a frame shift mutation?
A
A single base is deleted or inserted into middle of DNA sequence
7
Q
What is a mutation?
A
A permanent change in DNA sequence of a gene
