Review for Weeks 1-2

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Across
  1. 3. Large-scale evolutionary changes, including speciation and extinction.
  2. 6. barriers that prevent mating or fertilization between species.
  3. 7. Pool (2 words)The total collection of genes in a population at a given time.
  4. 8. The study of ancient life through fossils.
  5. 9. type of reproductive isolation where species reproduce at different times.
  6. 12. (2 words) Aristotle’s hierarchical classification system of life, ranking organisms in a ladder-like structure.
  7. 14. _______ structures are anatomical features that are similar due to common ancestry.
  8. 19. The concept by Charles Lyell that geological processes occurring today are the same as those in the past.
  9. 23. Speciation that occurs due to geographical separation.
  10. 24. Fitness (2 words) The reproductive success of an individual compared to others.
  11. 25. barriers that reduce hybrid viability or fertility.
  12. 27. (2 words) The intentional breeding of organisms to enhance specific traits.
  13. 30. A trait that enhances survival and reproductive success.
  14. 31. Selection that favors intermediate phenotypes and reduces variation.
  15. 32. Developed the binomial nomenclature system for classifying organisms.
  16. 33. A change in the DNA sequence that can lead to genetic variation.
Down
  1. 1. The theory proposed by Georges Cuvier that Earth's geological and biological changes resulted from sudden, short-lived events.
  2. 2. A drastic reduction in population size that decreases genetic diversity.
  3. 4. (2 words) The evolution of similar traits in unrelated species due to similar environmental pressures.
  4. 5. anatomical structures that are proposed to have lost their original function through evolution.
  5. 8. (2 words) A type of tree diagram showing evolutionary relationships among species.
  6. 10. The study of the distribution of species and ecosystems in geographic space and through time.
  7. 11. An economist whose work on population growth influenced Darwin’s understanding of competition and survival.
  8. 13. species concept that Identifies species based on physical traits.
  9. 15. The idea that evolution occurs slowly over long periods.
  10. 16. (2 Words) The theory that evolutionary change occurs in rapid bursts rather than gradually.
  11. 17. Proposed an early theory of evolution, suggesting organisms change over time through the principle of use and disuse and the inheritance of acquired characteristics.
  12. 18. (2 words) The rapid evolution of diverse species from a common ancestor in response to new ecological opportunities.
  13. 20. ______ Effect involves Genetic changes in a new population established by a small number of individuals.
  14. 21. – Small-scale changes in allele frequencies within a population.
  15. 22. A type of natural selection that favors one extreme phenotype.
  16. 26. A naturalist who independently conceived the theory of evolution by natural selection, prompting Darwin to publish his work.
  17. 28. reproductive isolation where species that live in different habitats and do not interbreed.
  18. 29. Selection that favors extreme phenotypes over intermediate ones.