Evolution

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Across
  1. 4. a graph that shows evolutionary relationships between species
  2. 9. type of genetic drift that causes an organism to become first to a new area
  3. 12. reproductive ______ is the factors that affect organisms breeding
  4. 13. _____ Selection - attraction to traits that may or may not have advantage
  5. 15. _______ isolation affects reproduction based on time
  6. 16. variations of a trait
  7. 18. Changes in DNA and the root cause for evolution
  8. 20. Evidence that shows all life starts very similarly
  9. 22. collection of alleles of a trait in the population
  10. 23. Change in traits of a population over a long time leading to new species
  11. 25. Studying preserved remains shows how organisms' traits changed over time
  12. 26. a trait that gives an advantage in a certain environment
Down
  1. 1. ______ Selection - humans breed organisms to exemplify desirable traits
  2. 2. ______ Selection - survival of the fittest
  3. 3. Father of evolution, came up with the theory of natural selection
  4. 5. A random event causes organisms to move areas against their will
  5. 6. ______ Structures - unused leftover traits that an ancestor used
  6. 7. _______ isolation affects reproduction based on actions of the organisms
  7. 8. ______ Structures - came from a common ancestor, same structures
  8. 10. Allele _________ is how often a trait shows up in the population
  9. 11. a characteristic of an organism
  10. 14. modern technology allows use to study the genetic sequences and see changes between species
  11. 17. ______ Structures - different structures but provide same function, independently evolved
  12. 19. ______ isolation affects reproduction based on location
  13. 21. Migration - organisms moving area changing allele frequencies
  14. 24. type of genetic drift that causes much of the population to die off changing allele frequencies