Across
- 2. structures that are so similar that they imply a common ancestor
- 5. drift change in frequency of an existing gene variation in the population due to random chance
- 6. how a new kind of plant or animal species is created
- 8. effect the reduction in genomic variability that occurs when a small group of individuals becomes separated from a larger population
- 9. the natural home or environment of a plant animal or other organisms
- 11. geological altered remains of a once living organism
- 12. occurs when both extreme traits are favored in an environment.
Down
- 1. a mechanism of evolution's
- 3. process of developing by gradual changes
- 4. condition of being physically fit and healthy
- 7. process by which humans choose individual organisms with certain phenotypic trait values for breeding
- 10. place or position that is particularly appropriate for someone or something, especially due to being very specific and different from others
- 13. an idea that is intended to explain facts