Across
- 2. A mechanism of natural selection driven by mate choice often resulting in ornamental structures. (2 words, no space)
- 3. The scientific comparison of body structures in different organisms; largely indicates common ancestry. (2 words, no space)
- 5. A process by which organisms with certain inherited traits are more likely to survive and reproduce. (2 words, no space)
- 8. The chronology of the Earth’s existence based on the science of geology; the Earth in 4.6 billion years old; fossils indicate 5 mass extinctions of life. (3 words, no spaces)
- 11. May be directional, disruptive or stabilizing (see Figure 13/28)
- 12. Reproductive isolation due to factors affecting the hybriz zygote’s ability to develop and reproduce.
- 13. Changes in the allele frequencies of a population over time.
- 14. According to the modern synthesis, microevolution is defined as “the change in ___________ frequencies over time”.
- 15. The evidence of a dead or extinct organism found mostly in sedimentary rock.
- 18. The description, classification and naming of organisms
- 20. The contemporary combination of evolutionary theory and genetics. (2 words, no space)
- 23. The study of different organisms’ developmental stages to reveal homologies; evidence of common ancestry.
- 24. Genetic drift due to a drastic reduction of population size. (2 words, no space)
- 25. Speciation as a result of reproductive isolation within a population without physical barriers.
- 26. genetics The study of allele frequencies in the most basic unit of life that evolves; think Hardy/Weinberg. (2 words, no space)
- 28. Similarity in structure due to purpose, arising in unrelated species through convergent evolution
Down
- 1. The idea that speciation in some cases may not be gradual but abrupt and followed by long periods of stability. (2 words, no space)
- 2. A latin word meaning “kind”; also a complex biological concept.
- 4. Similarity in structure due to common ancestry.
- 6. A change in allele frequencies (the gene pool) of a population due to chance. (2 words, no space)
- 7. Reproductive isolation due to factors preventing the formation of a zygote.
- 9. Major changes in the history of life including speciation.
- 10. The retention of ancestrally juvenile characteristics in the adults of a derived species.
- 16. Genetic drift due to a small population sample colonizing new, isolated habitat. (2 words, no space)
- 17. This man suggested that species evolved through acquired traits; a theory that was largely dismissed through the process of science.
- 19. The distribution of organisms on Earth.
- 21. Branch of biology that focuses on classifying organisms and determining their evolution relationships.
- 22. A group of individuals of the same species living in the same place and time.
- 27. Author of “The Origin of Species”.