Unit 9 Natural Selection

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Across
  1. 2. Random changes in allele within populations
  2. 7. A structure that has lost most or all its original function through evolution
  3. 9. Differences in traits among a species
  4. 11. A branching diagram showing the evolutionary relationships among various species
  5. 12. structure in different species that are similar because of common ancestry
  6. 13. A group of organisms capable of reproducing with one another
  7. 14. the loss of a species
  8. 15. Formation of new and distinct species in the course of evolution
Down
  1. 1. Diagram showing evolutionary relationships among various biological species
  2. 3. Traits that enhance an organism's survival
  3. 4. organisms ability to survive and reproduce in its enviroment
  4. 5. Structures in different species that have similar functions but evolved independantly
  5. 6. Only the most fit in the environment with survive
  6. 8. process where organisms better adapted to their environment will survive
  7. 10. Separation of populations by physical barriers