Rates Of Speciation Flashcards
1
Q
Gradualism
A
Speciation occurs as morphological changes slowly and steadily accumulate.
Constant rate of change
2
Q
Punctuated Equilibrium
A
Rare but occasional large changes occur within populations.
Separated by large periods of no or little change
3
Q
What might cause punctuated equilibrium
A
An important mutation or a large selective pressure
4
Q
Species selection
A
Competition between different species that utilize the same resources
5
Q
What could species selection lead to or cause
A
Natural selection within separate species populations.
Cause extinctions
6
Q
Example of species selection caused extinction
A
Neanderthal extinction hypothesis
