Evolution and Natural Selection

123456789101112131415161718
Across
  1. 4. Type of evolution where an ancestral species divides into many new ones
  2. 6. ______ equilibrium is quick speciation with long periods of stability
  3. 9. When an organism copies the appearance of another
  4. 12. Type of selection that favors one extreme form of a trait
  5. 14. Mechanism for change in a population; Survival of the fittest
  6. 16. Alteration of allelic frequencies by chance events
  7. 17. Allows an organism to blend in with its surroundings
  8. 18. Total number of genes present in a population
Down
  1. 1. Allelic _______ is % of an allele in a population
  2. 2. Type of birds Darwin studied on the Galapagos Islands
  3. 3. Stable allelic frequencies mean the population is in genetic ______
  4. 5. Concept that speciation occurs slowly and steadily
  5. 7. Structures with similar origin and design but different purposes
  6. 8. Any structure or behavior giving an organism an advantage
  7. 10. Type of evolution where unrelated species evolve similar traits
  8. 11. Any structure that no longer serves its original function
  9. 13. Type of selection that favors the average individuals
  10. 15. A change in a DNA sequence that may lead to useful adaptation