Selection Flashcards
1
Q
what are the different types of selection?
A
- stabilising
2 directional - disruptive
2
Q
what is stabilising selection?
A
where selection pressure towards the centre - increasing the number of individuals at modal value - more likely to survive and reproduce
3
Q
what is directional selection?
A
Selection pressure towards a single extreme phenotype - individuals are more likely to survive - response to the environment changing
4
Q
what is disruptive selection?
A
Selection pressure towards extreme phenotypes at either end of the range - individuals are more likely to survive and reproduce - occurs when the environment favours more than one phenotype
