Across
- 2. result of chance events rather than natural selection.
- 5. A group of individuals that belong to the same species and live in the same area
- 13. isolation in which two populations are separated physically
- 15. two populations have differences in courtship rituals
- 18. all the members of a particular population
- 20. organism to survive and reproduce in its environment
Down
- 1. ngle curve splits into two
- 3. change in allele frequency
- 4. organisms better suited to their environment are more likely to survive
- 6. entire curve moves;
- 7. need of life
- 8. A trait that helps an organism survive and reproduce
- 9. movement to other locations
- 10. diffirent form of gene
- 11. Number of times that an allele occurs in a gene pool
- 12. makes animals look harmful to others
- 14. modify a species by breeding it for certain traits
- 16. movement of populations
- 17. result of the migration of a small subgroup of a population
- 19. movemet of alleles