Evolution Review

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Across
  1. 1. Body structures found in present day organisms that no longer serve its original purpose
  2. 4. When speciation occurs due to reproducing at different times
  3. 5. Evolution where distantly related organisms in different locations evolve similar traits due to similar environmental pressures
  4. 6. An organism's physical features
  5. 10. Type of selection when members at both extremes are favored
  6. 11. The biological change where descendants come to differ from their ancestors
  7. 12. Branching diagram that shows relatedness among organisms and their common ancestors based on shared characteristics
  8. 14. Type of selection where the environment (nature) determines which traits are most fit
  9. 15. Structural features with common evolutionary origins
  10. 17. Organisms that were once similar branch off and become separate species that can no longer interbreed
  11. 18. Distribution of lifeforms over geographical areas, both in past and present life forms
  12. 19. Type of selection pattern when members in the middle of curve are favored
  13. 21. Any trait that is heritable and increases fitness
  14. 22. Provide records of early life and evolutionary history
  15. 23. Type of selection where humans determine which traits are most favorable
Down
  1. 2. external factor that reduces the reproductive success of some individuals in a population, while favoring others
  2. 3. Having a greater chance of of surviving and reproducing
  3. 7. Evolution where 2 or more species share a common ancestor from which they separated
  4. 8. Type of selection when members on ONE extreme are favored
  5. 9. Structural features that evolved for similar functions on organisms that are not closely related. Different structures
  6. 11. Study of evolution by comparing early stages of plant and animal growth and development
  7. 13. This occurs when food, mates, and other resources are limited
  8. 16. When speciation occurs due to some physical barrier separating a population
  9. 18. When speciation occurs due to different courtship rituals, mating calls, etc
  10. 20. Members within a species exhibit individual differences that can be inherited