Across
- 5. Type of evolution that causes groups of organisms to be very different from each other
- 7. Type of speciation caused by geographical separation
- 9. All of the living things that inhabit a certain area
- 12. When a natural disaster or disease wipes out most of the population and changes the allele frequency of a population
- 17. Type of evolution that causes similar phenotypes between distantly related species
- 19. Barriers that prevent members of different species from mating and producing a zygote
- 20. Random fluctuations in a frequency of a certain gene or allele in a population
- 21. Often used as a null hypothesis for population ecology (has its own equation)
- 22. mating The type of mating in natural selection
Down
- 1. The number of the same species that inhabit a certain area
- 2. Evolution that occurs slowly over a very long period of time
- 3. A factor that is nonliving
- 4. Humans controlling mating of organisms to cause a higher frequency of desirable traits
- 6. The process for when a species no longer inhabits the earth
- 8. Barrier that keeps hybrid zygotes from developing into healthy and fertile adults
- 10. The process where new species form
- 11. Equilibrium that occurs after rapid periods of stasis
- 13. A factor that is living
- 14. All of the living and nonliving things in a particular area
- 15. A random change in DNA
- 16. Type of speciation that is not cause by geographical separation
- 18. An organism's ability to survive long enough to reproduce