Evolution and Natural Selection

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Across
  1. 4. more primitive features
  2. 5. any change in the allelic frequencies
  3. 8. is a measure of the relative contribution that as individual trait makes to the next generation
  4. 9. occurs when a population declines to a very low number and then rebounds
  5. 13. are newly evolved features
  6. 14. are structures that are the reduced forms of functional structures in other organism
  7. 16. an early, pre-birth stage of an organism's development
  8. 17. similar in construction but are not inherited from a common ancestor
  9. 19. when an animal is getting used to the environment around you
  10. 20. cumulative changes
Down
  1. 1. when a small sample of population settles in a separate location from the rest
  2. 2. a process that splits a population into two groups
  3. 3. most common form of natural selection
  4. 6. an extreme version of a trait makes an organism more fit
  5. 7. Darwin's study of the distribution of plants and animals around the world
  6. 10. occurs when humans develop new breed of dogs or new strains of crop plants.
  7. 11. one species evolves to resemble another species
  8. 12. allows organisms to be almost invisible
  9. 15. anatomically similar structures inherited from a common ancestor
  10. 18. those less equipped would die