Natural Selection Review

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Across
  1. 1. an instruction for making a protein molecule
  2. 3. a trait that makes it less likely that an individual will survive in a specific environment
  3. 5. a long piece of DNA that contains many genes
  4. 9. when humans, not nature, choose for or against traits in organisms
  5. 10. genes --> _______ --> trait
  6. 11. nonadaptive traits become ______ common over time because organisms are less likely to survive, reproduce, and pass the traits on to offspring
  7. 12. a trait that makes it more likely that an individual will survive in a specific environment
  8. 13. a type of molecule that genes and chromosomes are made of
  9. 14. adaptive traits become ______ common over time because organisms are more likely to survive, reproduce, and pass the traits on to offspring
Down
  1. 2. the process by which the distribution of traits in a population change over many generations
  2. 4. the combination of alleles that code for a specific gene
  3. 6. observable trait of an individual resulting from the expression of genes
  4. 7. a molecule with a specific shape that determines its function
  5. 8. an animal that is hunted or killed by other animals for food
  6. 10. an animal that hunts and kills other animals for food