Speciation Flashcards
1
Q
what is speciation?
A
the generation of new biological species by evolution
2
Q
what is the process of speciation?
A
- isolation by a barrier
- mutation
- natural selection
- formation of a separate species
3
Q
different types of isolation barriers?
A
- geographical e.g. rivers, mountains, deserts
- ecological e.g. rainfall, light, temperature (abiotic factors)
- behavioural e.g. when groups of a species breeds at different times of the year
4
Q
what are the two types of speciation?
A
- allopatric
- sympatric
5
Q
what is allopatric speciation?
A
when the species is split into two sun populations by a geographical barrier
allopatric = geographical
6
Q
what is sympatric speciation?
A
when the species is split into two sun populations by an ecological or behavioural barrier
sympatric = ecological or behavioural
