More on Mutations Flashcards
1
Q
What are the 2 causes of Mutations?
A
- Chance - Most common cause
- Mutagens
Mutagens are some factors that can influence teh likelihood of mutations
2
Q
List some mutagens
A
- X-rays
- Ionising Radiation (sunlight)
- Chemicals
3
Q
What is the chance of a mutation occurring?
A
2-30 x 10^-7
4
Q
What usually happens when a mutation occurs?
A
- Faulty DNA can be repaired by specific enzymes
5
Q
What is the most common result of a mutation?
A
- Production of inferior or no protein
- Results may be fatal or disease causing
- Occurss due to nearly 6 billion bases needing to be copied - doesn’t always happen accurately
6
Q
What is an uncommon effect of mutation?
Not very rare
A
- Neutral Mutation
- No change
7
Q
What is a very rare effect of mutation?
A
- Productio of new/superior protein
- Results may be gain of reproductive advantage
8
Q
What is the significance of Beneficial mutations?
A
Responsible for Evolution
