Evolution Unit

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Across
  1. 1. Segment of DNA that codes for a trait
  2. 3. Random change in DNA
  3. 5. Movement of genes between populations
  4. 6. Characteristic of an organism
  5. 7. Different versions of the same gene
  6. 11. A group of individuals of the same species living in an area
  7. 12. Change in populations over time
  8. 14. Random changes in allele frequencies in a population
  9. 16. Trait that increases survival or reproduction
  10. 17. Complete disappearance of a species
  11. 18. Group of organisms that can interbreed
  12. 20. Formation of a new species
Down
  1. 2. Process where organisms with favorable traits survive and reproduce
  2. 4. Environmental factor that affects survival and reproduction
  3. 8. Preserved remains or traces of ancient organisms
  4. 9. Differences among individuals in a population
  5. 10. Species from which others have evolved
  6. 13. Molecule that carries genetic information
  7. 15. An organism’s ability to survive and reproduce
  8. 19. The ability to stay alive