unit 6 bio

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Across
  1. 3. A trait that helps an organism survive and reproduce
  2. 7. Breeding organisms with specific traits in order to produce offspring with identical traits.
  3. 8. group of individuals of the same species that live in the same area
  4. 9. movement of alleles from one population to another
  5. 12. Migration from a location
  6. 14. Form of reproductive isolation in which two populations have differences in courtship rituals or other types of behavior that prevent them from interbreeding
  7. 16. occurs when natural selection favors one of the extreme variations of a trait
  8. 20. A change in allele frequency following a dramatic reduction in the size of a population
Down
  1. 1. disguise
  2. 2. Ability of an animal to look like another more harmful animal
  3. 4. group of individuals of the same species that live in the same area
  4. 5. how well an organism can survive and reproduce in its environment
  5. 6. Type of natural selection that selects against the average individuals in a population
  6. 10. the separation of a population of organisms from the rest of its species due to some physical barrier such as a mountain range or an ocean
  7. 11. how often a form of a gene appears in a gene pool
  8. 13. Any difference between individuals of the same species.
  9. 15. individuals with the average form of a trait have the highest fitness
  10. 17. form of reproductive isolation in which two populations reproduce at different times
  11. 18. change in allele frequencies as a result of the migration of a small subgroup of a population
  12. 19. random change in allele frequencies that occurs in small populations