Evolution

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Across
  1. 1. a transcription factor in stickleback fish that is unregulated is salt water populations to produce spines and down regulated in fresh water populations
  2. 3. underlying genetics that cause a phenotype
  3. 4. an organism's struggle to live and reproduce
  4. 6. comparing the genomes of individuals either within a species or between species
  5. 7. a master gene that is common to human, mice, and flies; a human version of it can induce ectopic fly eyes on wings or legs
Down
  1. 1. a physical characteristic of an organism that is a product of genetics and the environment
  2. 2. a receptor protein involved in hair pigmentation; a mutation is responsible for red hair color
  3. 5. coloration changes that lead to greater survival, on an evolutionary scale