Natural Selection

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Across
  1. 2. a long piece of DNA that contains many genes.
  2. 5. a characteristic that all members of species have.
  3. 7. a type of molecule that genes and chromosomes are made of.
  4. 8. a related organism from a previous generation.
  5. 9. an instruction for making a protein molecule.
Down
  1. 1. the number of individuals with each trait in population.
  2. 2. an event or process that leads to a result or change.
  3. 3. a result or change that happens because of an event or process.
  4. 4. a way of hiding by looking the same as the background.
  5. 6. everything (living and nonliving) that surrounds an organism.