Table of contents
- 1. Introduction to Biology2h 40m
- 2. Chemistry3h 40m
- 3. Water1h 26m
- 4. Biomolecules2h 23m
- 5. Cell Components2h 26m
- 6. The Membrane2h 31m
- 7. Energy and Metabolism2h 0m
- 8. Respiration2h 40m
- 9. Photosynthesis2h 49m
- 10. Cell Signaling59m
- 11. Cell Division2h 47m
- 12. Meiosis2h 0m
- 13. Mendelian Genetics4h 41m
- Introduction to Mendel's Experiments7m
- Genotype vs. Phenotype17m
- Punnett Squares13m
- Mendel's Experiments26m
- Mendel's Laws18m
- Monohybrid Crosses16m
- Test Crosses14m
- Dihybrid Crosses20m
- Punnett Square Probability26m
- Incomplete Dominance vs. Codominance20m
- Epistasis7m
- Non-Mendelian Genetics12m
- Pedigrees6m
- Autosomal Inheritance21m
- Sex-Linked Inheritance43m
- X-Inactivation9m
- 14. DNA Synthesis2h 27m
- 15. Gene Expression3h 20m
- 16. Regulation of Expression3h 31m
- Introduction to Regulation of Gene Expression13m
- Prokaryotic Gene Regulation via Operons27m
- The Lac Operon21m
- Glucose's Impact on Lac Operon25m
- The Trp Operon20m
- Review of the Lac Operon & Trp Operon11m
- Introduction to Eukaryotic Gene Regulation9m
- Eukaryotic Chromatin Modifications16m
- Eukaryotic Transcriptional Control22m
- Eukaryotic Post-Transcriptional Regulation28m
- Eukaryotic Post-Translational Regulation13m
- 17. Viruses37m
- 18. Biotechnology2h 58m
- 19. Genomics17m
- 20. Development1h 5m
- 21. Evolution3h 1m
- 22. Evolution of Populations3h 52m
- 23. Speciation1h 37m
- 24. History of Life on Earth2h 6m
- 25. Phylogeny2h 31m
- 26. Prokaryotes4h 59m
- 27. Protists1h 12m
- 28. Plants1h 22m
- 29. Fungi36m
- 30. Overview of Animals34m
- 31. Invertebrates1h 2m
- 32. Vertebrates50m
- 33. Plant Anatomy1h 3m
- 34. Vascular Plant Transport2m
- 35. Soil37m
- 36. Plant Reproduction47m
- 37. Plant Sensation and Response1h 9m
- 38. Animal Form and Function1h 19m
- 39. Digestive System10m
- 40. Circulatory System1h 57m
- 41. Immune System1h 12m
- 42. Osmoregulation and Excretion50m
- 43. Endocrine System4m
- 44. Animal Reproduction2m
- 45. Nervous System55m
- 46. Sensory Systems46m
- 47. Muscle Systems23m
- 48. Ecology3h 11m
- Introduction to Ecology20m
- Biogeography14m
- Earth's Climate Patterns50m
- Introduction to Terrestrial Biomes10m
- Terrestrial Biomes: Near Equator13m
- Terrestrial Biomes: Temperate Regions10m
- Terrestrial Biomes: Northern Regions15m
- Introduction to Aquatic Biomes27m
- Freshwater Aquatic Biomes14m
- Marine Aquatic Biomes13m
- 49. Animal Behavior28m
- 50. Population Ecology3h 41m
- Introduction to Population Ecology28m
- Population Sampling Methods23m
- Life History12m
- Population Demography17m
- Factors Limiting Population Growth14m
- Introduction to Population Growth Models22m
- Linear Population Growth6m
- Exponential Population Growth29m
- Logistic Population Growth32m
- r/K Selection10m
- The Human Population22m
- 51. Community Ecology2h 46m
- Introduction to Community Ecology2m
- Introduction to Community Interactions9m
- Community Interactions: Competition (-/-)38m
- Community Interactions: Exploitation (+/-)23m
- Community Interactions: Mutualism (+/+) & Commensalism (+/0)9m
- Community Structure35m
- Community Dynamics26m
- Geographic Impact on Communities21m
- 52. Ecosystems2h 36m
- 53. Conservation Biology24m
50. Population Ecology
Introduction to Population Ecology
Problem 9c
Textbook Question
Which of the following statements about human populations in industrialized countries is incorrect? a. Birth rates and death rates are high. b. Average family size is relatively small. c. The population has undergone the demographic transition. d. The survivorship curve is Type I.
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1
Identify the characteristics of human populations in industrialized countries. These typically include low birth and death rates, smaller average family sizes, and a demographic transition from high birth and death rates to lower rates.
Analyze each statement: Statement (a) suggests high birth and death rates, which contradicts the typical characteristics of industrialized countries.
Consider the meaning of 'demographic transition'. It refers to the shift from high birth and death rates to low birth and death rates, which is a feature of industrialized nations.
Understand the survivorship curve types. Type I curves, where most individuals live to old age, are typical of industrialized countries due to better healthcare and living conditions.
Conclude which statement is incorrect by comparing the typical characteristics of populations in industrialized countries with the statements provided.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Demographic Transition
The demographic transition model describes the transition from high birth and death rates to lower birth and death rates as a country develops. This process typically occurs in four stages: pre-industrial, transitional, industrial, and post-industrial. In industrialized countries, populations usually experience lower birth rates and death rates, indicating they have completed this transition.
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Survivorship Curves
Survivorship curves are graphical representations that show the number of individuals surviving at each age for a given species. Type I curves, typical of humans in industrialized nations, indicate high survival rates in early and middle life, with a significant drop in survival in older age. This contrasts with Type II and Type III curves, which depict different survival patterns.
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Population Dynamics in Industrialized Countries
In industrialized countries, population dynamics are characterized by low birth rates and low death rates, leading to stable or slowly growing populations. Factors contributing to this include access to healthcare, education, and family planning. Average family size tends to be smaller due to economic considerations and lifestyle choices, which is a significant shift from pre-industrial societies.
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