Mutations Flashcards
1
Q
What is a mutation
A
A change to a base
2
Q
How often do mutations happen
A
All the time
3
Q
Why do the shape of protein not change even if there has been a mutation
A
Different base triplets can code for the same amino acid
4
Q
Most mutations have …. on the protein
A
No effect on function
5
Q
What happens if shape of protein changes + (example)
A
Dramatic effect on function
Active site of enzyme changes so it can longer fit substrate
Structural protein eg collagen may lose it strength
6
Q
What do the non coding parts of DNA do
A
Turn genes on and off
7
Q
What refactor does mutation of the non coding part of DNA have
A
Excess proteins may be produced eg uncontrolled mitosis leading to cancer
