Natural Selection and Adaptation

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Across
  1. 5. a group of individuals born and living at about the same time
  2. 8. any difference in traits between individual organisms
  3. 9. a group of the same type of organism living in the same area
  4. 11. the process by which species adapt to environmental changes over a very long time
  5. 12. a part of an organism (for example, one or more bones)
  6. 16. a way of hiding by looking the same as the background
  7. 17. the process by which the distribution of traits in a population changes over many generations
  8. 19. something in the environment that affects an individual’s chances of surviving
  9. 20. an organism produced as a result of reproduction
  10. 21. a trait that makes it less likely that an individual will survive in a specific environment
  11. 22. a random change to a gene that sometimes results in a new trait
Down
  1. 1. a long piece of DNA that contains many genes
  2. 2. a body structure in two or more species that features the same parts (for example, the same bones)
  3. 3. the number of individuals with each trait in a population
  4. 4. the process by which one population evolves into two or more different species
  5. 6. an instruction for making a protein molecule
  6. 7. an organism's arm, leg, or wing
  7. 10. evidence of life from the past, such as fossilized bones, footprints, or leaf prints
  8. 13. a related organism from a previous generation
  9. 14. a specific characteristic of an individual organism
  10. 15. to receive genes from a parent
  11. 18. a trait that makes it more likely that an individual will survive in a specific environment