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