This is when members of different populations can no longer mate successfully with one another.
What is Reproductive Isolation
100
Reproductive isolation
Galapagos finch.
200
The rise of two or more species from one existing species.
What is Speciation
200
Behavioral Isolation
Photuris frontalis emits one flash every second, P. hebes emits one flash every 2 seconds, and P. fairchildi produces a double flash every 5.5 seconds
300
Isolation caused by differences in courtship or mating behaviors.
What is behavioral isolation
300
Speciation
Galapagos finch.
400
Involves physical barriers that divide a population into two or more groups.
What is geographic isolation
400
Geographic isolation
Snapping shrimp. They are almost identical to one another however when you put males and females from opposite sides of the isthmus are placed together, they snap at each other instead of courting.
500
When timing prevents reproduction between populations.
What is temporal isolation
500
Temporal isolation.
Monterey pine sheds its pollen in February, while the Bishop pine sheds its pollen in April. They are very closely related and have likely evolved through Temporal isolation.