Chapter 18 Evolution

1234567891011121314151617181920
Across
  1. 3. Favors the average trait
  2. 6. Species distribution and evolutionary history
  3. 7. Different Structures,Similar functions,separate evolution
  4. 9. All life shares a common ancestor
  5. 10. Favors both extreme traits
  6. 11. The preserved traces of ancient organisms.
  7. 14. Selection-"Survival of the fittest"
  8. 16. An organisms ability to live long enough
  9. 17. curve-Common trait distribution graph
  10. 18. past geological processes like present ones
  11. 19. pool-All genes in a population
  12. 20. Remnants of structures with lost function
Down
  1. 1. traits controlled by multiple genes
  2. 2. one extreme trait
  3. 4. Selection-The Process by which humans selectively breed organisms for desired traits.
  4. 5. The evolutionary process by which populations evolve to become distinct species
  5. 8. Structure Similar Structures,Different functions,common ancestor
  6. 9. the production by a single gene of two or more apparently unrelated effects.
  7. 12. How well an organism is fit to survive in its environment
  8. 13. The gradual change in the characteristics of a species overtime.
  9. 15. trait that helps an oragnisms survive in environments