9.4 types of selection Flashcards
1
Q
what does natural selection result in?
A
species that are better adapted to their environment
2
Q
how may species be adapted to their environment?
A
- anatomically
- physiologically
- behaviourally
3
Q
what is meant by polygenes?
A
more than one gene
4
Q
what is directional selection?
A
phenotypes favours one extreme
5
Q
what is stabilising selection?
A
phenotype favours the mean
6
Q
which selection preserves the characteristics of the population?
A
stabilising selection
7
Q
which selection changes the characteristics of the population?
A
directional selection
