PRESENTATION OUTLINE
SPECIES
- A species is a group of offspring
- that can interbreed and produce fertile
- offspring
An example of a species is a squirrel. Squirrels are a species because they could interbreed and produce more offspring.
FERTILE OFFSPRING
- Fertile offspring means offspring that can
- produce more offspring.
An example of a fertile offspring is a liger since ligers can't reproduce.
Speciation
- An evolution of a new species
- from a existing species.
THE STEPS OF SPECIATION ARE....
- Separation
- Adaptation
- Division
- Or S.A.D
1. SEPARATION
- Species are separated by some kind
- of geographic boundary.
An example of a separation are two different types of squirrels that are separated from a canyon.
2. Adaptation
- Populations change as individuals
- better adapted to new conditions
- to survive and reproduce.
The squirrels that were separated from the canyon, have to adapt to there new environment.
3. DIVISION
- Two genes population are so different
- that they can no longer interbreed.
The squirrels that were separated from the canyon can't divide because they were separated and adapted.