Rat Island Vocan Crossword Puzzle

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Across
  1. 4. structures Remnants of once-functional features with reduced or no use.
  2. 8. Darwin British scientist who proposed the theory of evolution by natural selection.
  3. 11. Random changes in an organism's DNA, introducing new variations.
  4. 12. reproduction Greater reproductive success of individuals with advantageous traits.
  5. 13. Measure of an organism's ability to survive and reproduce in its environment.
  6. 15. Resembling another species for protection or benefit.
  7. 16. selection Process where advantageous traits increase survival and reproduction.
  8. 18. Blending with the surroundings to avoid detection.
Down
  1. 1. adaptation Internal process that helps an organism thrive in its environment.
  2. 2. structures Structures derived from a common ancestor with similar underlying anatomy.
  3. 3. Trait that helps an organism survive and reproduce in its environment.
  4. 5. drift Random changes in gene frequencies in a population over time.
  5. 6. Baptiste Lamarck French biologist who proposed an early theory of evolution based on acquired characteristics.
  6. 7. Movement of individuals from one population to another.
  7. 9. Gradual change in inherited characteristics of populations over time.
  8. 10. selection Breeding of plants or animals for specific traits by humans.
  9. 14. adaptation Physical feature that enhances survival in a specific environment.
  10. 17. structures Similar structures with different evolutionary origins.