Evolution

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Across
  1. 4. Trait that improves an organism’s chance of survival
  2. 5. Study of living organisms
  3. 7. Loss of genetic diversity due to a drastic reduction in population size
  4. 9. Process by which organisms better adapted to their environment survive and reproduce
  5. 11. Preserved remains or traces of ancient organisms
  6. 13. Reduced genetic variation when a new population is established by a small group
  7. 14. Different form of a gene
  8. 16. Principle stating that lower rock layers are older than those above them
  9. 17. Random change in allele frequencies in a population
  10. 18. Observable characteristics of an organism
  11. 21. Ship on which Darwin traveled during his research journey
  12. 23. Genetic makeup of an organism
  13. 24. Change in DNA sequence
  14. 25. Movement of genes between populations
  15. 26. Ability of an organism to survive and reproduce in its environment
  16. 27. Structures with similar anatomy due to common ancestry
  17. 28. How often a particular allele appears in a population
Down
  1. 1. Well-supported explanation based on evidence and observation
  2. 2. Structures with similar function but different evolutionary origins
  3. 3. Differences in traits among individuals in a population
  4. 6. Human-controlled breeding to select desired traits
  5. 8. Scientist who developed the theory of evolution by natural selection
  6. 10. Group of organisms that can interbreed and produce fertile offspring
  7. 12. Scientist known for the idea of inheritance of acquired characteristics
  8. 15. Molecule that carries genetic information
  9. 19. Study of fossils and ancient life
  10. 20. Remnant structure with little or no current function
  11. 22. Segment of DNA that codes for a trait