Genetic diversity Flashcards
1
Q
Why is genetic diversity important? - (2 eg)
A
- It increases biodiversity in ecosystems
- Increases species survival following environmental change
- Increases the number of individuals that can survive and reproduce because they are more robust to change
2
Q
What is biodiversity?
A
The variety of all living organisms
3
Q
Genetic diversity
A
The variety of genes or the number of different inherited characteristics present in a species.
4
Q
Species diversity
A
The number of different species/populations in a community, habitat or environment.
5
Q
Ecosystem diversity
A
The variety of physical environments in which organisms live and interact.
6
Q
How does genetic diversity happen?
A
DNA mutations
(Mutations create slightly different versions of the same genes. This makes every individual different.)
7
Q
Point mutation
A
A single base is changed
8
Q
Deletion
A
A base is removed and causes a frameshift
9
Q
Insertion
A
A base is added and causes a frameshift
10
Q
Inversion
A
Inverts a segment of DNA from end to end
