Evolution Terms Review

-Help us survive and reproduce.

• -Get food.
• -Not get eaten.
• -Get mates.

-Finches

-One species put in lots of new environments = many new species.

-When organisms become alike because of same environment.

-Same as analogous structure.

-Shark vs. Dolphin

-Change over time.

• -Do not help you survive.
• -Changes between organisms.

• -A well supported idea.
• -eg-Gravity, Evolution

• -Charles Darwin
• -Discovered evolution.
• -Famous for the Galagopous Islands.

The Origion of Spiecies.

• 1. overproduce
• 2. competition (no 2 organisms are alike)
• 3. survival of the fittest
• 4. traits in population will change

-shows that all vertebrates look similar in early development stages

• -no longer needed
• -still present in the body
• -used to be used millions of years ago
• -eg: appendix

• -2 organisms have parts with similar purpose but different structures
• -not neccesarily related

• -2 organisms with similar bone/anatomical structures
• -organisms shared common ancestors

• -two organisms help each other survive or evolution
• -eg: gazelle and cheetah

• -the population of the same species is split, each in a different place
• -both populations may exchange because of environment