BiSci T4CW Fall 2015

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Across
  1. 2. A mechanism of natural selection driven by mate choice often resulting in ornamental structures. (2 words, no space)
  2. 3. The scientific comparison of body structures in different organisms; largely indicates common ancestry. (2 words, no space)
  3. 5. A process by which organisms with certain inherited traits are more likely to survive and reproduce. (2 words, no space)
  4. 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)
  5. 11. May be directional, disruptive or stabilizing (see Figure 13/28)
  6. 12. Reproductive isolation due to factors affecting the hybriz zygote’s ability to develop and reproduce.
  7. 13. Changes in the allele frequencies of a population over time.
  8. 14. According to the modern synthesis, microevolution is defined as “the change in ___________ frequencies over time”.
  9. 15. The evidence of a dead or extinct organism found mostly in sedimentary rock.
  10. 18. The description, classification and naming of organisms
  11. 20. The contemporary combination of evolutionary theory and genetics. (2 words, no space)
  12. 23. The study of different organisms’ developmental stages to reveal homologies; evidence of common ancestry.
  13. 24. Genetic drift due to a drastic reduction of population size. (2 words, no space)
  14. 25. Speciation as a result of reproductive isolation within a population without physical barriers.
  15. 26. genetics The study of allele frequencies in the most basic unit of life that evolves; think Hardy/Weinberg. (2 words, no space)
  16. 28. Similarity in structure due to purpose, arising in unrelated species through convergent evolution
Down
  1. 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. 2. A latin word meaning “kind”; also a complex biological concept.
  3. 4. Similarity in structure due to common ancestry.
  4. 6. A change in allele frequencies (the gene pool) of a population due to chance. (2 words, no space)
  5. 7. Reproductive isolation due to factors preventing the formation of a zygote.
  6. 9. Major changes in the history of life including speciation.
  7. 10. The retention of ancestrally juvenile characteristics in the adults of a derived species.
  8. 16. Genetic drift due to a small population sample colonizing new, isolated habitat. (2 words, no space)
  9. 17. This man suggested that species evolved through acquired traits; a theory that was largely dismissed through the process of science.
  10. 19. The distribution of organisms on Earth.
  11. 21. Branch of biology that focuses on classifying organisms and determining their evolution relationships.
  12. 22. A group of individuals of the same species living in the same place and time.
  13. 27. Author of “The Origin of Species”.