Evolution

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Across
  1. 3. evolution: when unrelated species evolve similar characteristics
  2. 5. forming of a new species through evolution from a pre-existing species
  3. 7. flow: movement of gene in and out of a population
  4. 8. differences in the physical traits of organisms
  5. 11. a feature that allows an organism to better survive their environment
  6. 12. process of biological change over time that makes descendants different from their ancestors
  7. 13. selection: organisms with the best adaptations will live longer and reproduce passing on the best traits
Down
  1. 1. elimination of a species
  2. 2. evolution: a number of different species arise from one common ancestor
  3. 4. drift: random change in allele frequency in a population over time
  4. 6. two populations form a specialized relationship and change in response to one another
  5. 9. slow constant changes over a long period of time
  6. 10. equilibrium: bursts of changes followed by periods of stability
  7. 12. genetic____________: NO change in allele frequency in a population over time