Evolution Crossword Puzzle

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Across
  1. 3. A heritable trait that has evolved through the process of natural selection, which maintains or increases the fitness of an organism under a given set of environmental conditions
  2. 6. Containing two copies of each chromosome
  3. 8. Speciation caused by genetic variation between members of a population
  4. 10. The observable characteristics of an organism
  5. 11. Changes in the composition of a gene pool for a population over generations
Down
  1. 1. Containing one copy of each chromosome
  2. 2. Sequence of DNA found at a specific location that codes for a trait
  3. 4. When an individual organism experiences a change in its phenotype in response to environmental stressors
  4. 5. Different versions or variants of the same gene
  5. 7. Containing more than 2 copies of each chromosome
  6. 9. The set of genes in a given organism