Gen Bio Unit 6a: Mechanisms of Evolution

Theme 6: Evolution

Unit 6a: Mechanisms of Evolution (Question-based Objectives)

Keywords: evolution, adaptation, extinction, acquired traits, natural selection, artificial selection, geologic time, absolute age, relative age, radioactive dating, Law of Superposition, radioactive dating, fossil record, homologous structures, biogeography, variation, fitness, speciation, embryology, molecular biology


  1. What are some of the most important evidences of biological evolution?
  2. What does the fossil record tell us about the way that organisms have changed over time?
  3. What causes some organisms to be more successful than others?
  4. How do the concepts of survival, reproduction, environmental changes, and genetic variation each play a role in natural selection?


  1. 50 Spring Observations- focusing on interactions of organisms with each other and with their environment
  2. Introduction to Biological Evolution Worksheet
  3. Geologic Time Scale Exploration
  4. History of the Earth Timeline
  5. Cytochrome-C Comparsion Lab from ENSI at
  6. Comparative Anatomy Worksheet
  7. What Darwin Never Saw Video Worksheet
  8. Natural Selection Modeling and Plasticware Natural Selection Lab Data Sheet


  1. Bottleneck Effect
  2. Evolution of sickle-cell anemia

Further Research: microevolution, Hardy-Weinberg Equilibrium, gene pool, genetic drift, gene flow, bottleneck effect, macroevolution, punctuated equilibrium, reproductive isolation, geographic isolation



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