1. EVOLUTION

5. Jean-Baptiste Lamark : 1744-1829 most famous for incorrectly theorizing on the process of evolution He thought that as a giraffe stretches its neck to reach for food, its neck grows longer; this trait is passed to offspring did not realize that acquired traits are not genetic

6. SPECIATION : the development of a new species Sometimes the variation among organisms is too great; eventually they could become separate species

7. SPECIES: a population of organisms that can produce fertile offspring able to reproduce

8. HORSE – Equus caballus DONKEY – Equus assinus MULE X

9. GEOGRAPHIC Isolation : two populations are separated by geographic barriers such as rivers, mountains, bodies of water, etc. Ex: Albert Squirrel and Kaibab Squirrel

10. PANGAEA : a supercontinent that formed over 300 million years ago Began separating 200 million years ago Continents continue to shift today

11. BEHAVIORAL Isolation : two groups of a population exhibit different behaviors which separate the population Ex: Eastern Meadowlarks & Western Meadowlarks have different mating songs

12. TEMPORAL Isolation : two groups of a population exhibit different times of breeding Ex: flowers blooming in different seasons

13. REPRODUCTIVE Isolation : the DNA of two species is too different to produce fertile offspring Ex: horse and donkeys produce non-fertile mules

14. DIVERGENT EVOLUTION : evolution of different features from similar lineages

15. DIVERGENT EVOLUTION : evolution of different features from similar lineages

16. DIVERGENT EVOLUTION : evolution of different features from similar lineages

17. CONVERGENT EVOLUTION : evolution of similar features from different lineages

18. CONVERGENT EVOLUTION : evolution of similar features from different lineages

19. CONVERGENT EVOLUTION : evolution of similar features from different lineages

20. CONVERGENT EVOLUTION : evolution of similar features from different lineages

22. DIVERGENT same becomes different CONVERGENT different becomes same