Table of contents
- 1. Introduction to Biology(61)
- 2. Chemistry(39)
- 3. Water(33)
- 4. Biomolecules(81)
- 5. Cell Components(60)
- 6. The Membrane(46)
- 7. Energy and Metabolism(55)
- 8. Respiration(54)
- 9. Photosynthesis(59)
- 10. Cell Signaling(24)
- 11. Cell Division(54)
- 12. Meiosis(55)
- 13. Mendelian Genetics(93)
- Introduction to Mendel's Experiments(3)
- Genotype vs. Phenotype(6)
- Punnett Squares(4)
- Mendel's Experiments(5)
- Mendel's Laws(5)
- Monohybrid Crosses(5)
- Test Crosses(7)
- Dihybrid Crosses(5)
- Punnett Square Probability(10)
- Incomplete Dominance vs. Codominance(5)
- Epistasis(2)
- Non-Mendelian Genetics(8)
- Pedigrees(4)
- Autosomal Inheritance(7)
- Sex-Linked Inheritance(13)
- X-Inactivation(4)
- 14. DNA Synthesis(54)
- 15. Gene Expression(74)
- Central Dogma(6)
- Introduction to Transcription(4)
- Steps of Transcription(8)
- Eukaryotic RNA Processing and Splicing(7)
- Introduction to Types of RNA(6)
- Genetic Code(12)
- Introduction to Translation(4)
- Steps of Translation(5)
- Post-Translational Modification(5)
- Review of Transcription vs. Translation(4)
- Mutations(13)
- 16. Regulation of Expression(57)
- Introduction to Regulation of Gene Expression(2)
- Prokaryotic Gene Regulation via Operons(9)
- The Lac Operon(7)
- Glucose's Impact on Lac Operon(5)
- The Trp Operon(5)
- Review of the Lac Operon & Trp Operon(2)
- Introduction to Eukaryotic Gene Regulation(5)
- Eukaryotic Chromatin Modifications(5)
- Eukaryotic Transcriptional Control(8)
- Eukaryotic Post-Transcriptional Regulation(5)
- Eukaryotic Post-Translational Regulation(4)
- 17. Viruses(23)
- 18. Biotechnology(69)
- 19. Genomics(22)
- 20. Development(33)
- 21. Evolution(44)
- 22. Evolution of Populations(35)
- 23. Speciation(43)
- 24. History of Life on Earth(34)
- 25. Phylogeny(26)
- 26. Prokaryotes(35)
- 27. Protists(27)
- 28. Plants(43)
- 29. Fungi(26)
- 30. Overview of Animals(16)
- 31. Invertebrates(26)
- 32. Vertebrates(47)
- 33. Plant Anatomy(31)
- 34. Vascular Plant Transport(26)
- 35. Soil(31)
- 36. Plant Reproduction(29)
- 37. Plant Sensation and Response(40)
- 38. Animal Form and Function(43)
- 39. Digestive System(42)
- 40. Circulatory System(58)
- 41. Immune System(43)
- 42. Osmoregulation and Excretion(35)
- 43. Endocrine System(36)
- 44. Animal Reproduction(39)
- 45. Nervous System(41)
- 46. Sensory Systems(34)
- 47. Muscle Systems(31)
- 48. Ecology(47)
- Introduction to Ecology(47)
- Biogeography(0)
- Earth's Climate Patterns(0)
- Introduction to Terrestrial Biomes(0)
- Terrestrial Biomes: Near Equator(0)
- Terrestrial Biomes: Temperate Regions(0)
- Terrestrial Biomes: Northern Regions(0)
- Introduction to Aquatic Biomes(0)
- Freshwater Aquatic Biomes(0)
- Marine Aquatic Biomes(0)
- 49. Animal Behavior(35)
- 50. Population Ecology(51)
- Introduction to Population Ecology(51)
- Population Sampling Methods(0)
- Life History(0)
- Population Demography(0)
- Factors Limiting Population Growth(0)
- Introduction to Population Growth Models(0)
- Linear Population Growth(0)
- Exponential Population Growth(0)
- Logistic Population Growth(0)
- r/K Selection(0)
- The Human Population(0)
- 51. Community Ecology(51)
- Introduction to Community Ecology(0)
- Introduction to Community Interactions(24)
- Community Interactions: Competition (-/-)(0)
- Community Interactions: Exploitation (+/-)(0)
- Community Interactions: Mutualism (+/+) & Commensalism (+/0)(0)
- Community Structure(27)
- Community Dynamics(0)
- Geographic Impact on Communities(0)
- 52. Ecosystems(25)
- 53. Conservation Biology(59)
21. Evolution
Introduction to Evolution and Natural Selection
21. Evolution
Introduction to Evolution and Natural Selection: Study with Video Lessons, Practice Problems & Examples
14PRACTICE PROBLEM
How can we determine if one variant of a species is more fit than another?
How can we determine if one variant of a species is more fit than another?