Across
- 2. Overtime, both extreme phenotypes become favored whereas the intermediate phenotype is no longer favored.
- 3. Preserved bone structures of organisms that help to support the theory of evolution.
- 5. This type of speciation occurs when a physical barrier prevents two species from breeding with one another
- 7. Overtime, extreme phenotypes are less favored than the intermediate phenotype.
- 12. This type of speciation occurs when two species evolve while living next to one another
- 13. The process of observing the similarities in embryos, which can indicate hoe closely related species are to one another.
- 14. This equation indicates the frequencies of alleles and genotypes in a population, but can only be used when there is no gene flow.
- 19. Darwin's theory of "______" indicates that species change overtime.
- 21. This type of isolation is due to species reproducing at different times
- 22. This type of selection occurs when specific species are breed in order to produce offspring with specific traits (Example: Breeding dogs)
- 23. The process of allele frequencies changing in a population due to a variety of factors such as an unexpected event or environmental cause.
- 25. A small group of a population leaves and decides to start a new population.
- 27. Individuals move into a new population
- 30. Organisms do not use these structures anymore, but their ancestors used to use them. (Example: Appendix)
- 31. These structures have the same function but do not look alike, indicating that the two organisms do not share a common ancestor. (Example: Bat wing and butterfly wing)
Down
- 1. Overtime, one extreme phenotype is favored over the other extreme and intermediate.
- 4. Species evolve along side of one another but are not related
- 6. This type of evolution occurs when two species evolve to have similar traits but are not related
- 8. An unexpected event occurs causing a large decrease in a population, however the population eventually will increase only with the alleles of the organisms who survived the event. (Examples of events: natural disasters or disease).
- 9. This type of selection causes a change in frequency of traits due to mating preferences.
- 10. The ability for a species to successfully survive and reproduce.
- 11. This type of isolation is due to species being located in different geographic areas
- 15. This type of evolution occurs when two species share a common ancestor
- 16. The process of new species forming
- 17. Structures that look the same but have different uses, indicating that the organisms share a common ancestor. (Example: Both whales and birds share similar structures such as the radius, metacarpals, and phalanges).
- 18. When this occurs, species enter or exit a population causing the ratio of alleles and genotypes to change in a population.
- 20. This type of selection occurs when is based on Darwin's theory of evolution and is based on overproduction, variations, adaptations, and descent with modification.
- 24. This type of isolation is due to different behaviors of species when trying to find a mate
- 26. Individuals leave their population
- 28. Characteristics that species inherit overtime to help them adapt to their environment.
- 29. This study allows scientists to observe the specific places that species live in.