Natural Selection

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Across
  1. 5. A trained plant or animal
  2. 6. Changing of gene
  3. 7. Genes that have been transferred from a different organism
  4. 8. An organism that is identical to the organism produced
Down
  1. 1. Difference between organisms
  2. 2. Disappearance of a species
  3. 3. Genetic variation bettering the organism
  4. 4. Group of breeding organisms