Table of contents

1. Introduction to Biology2h 42m
2. Chemistry3h 37m
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 44m
14. DNA Synthesis2h 27m
15. Gene Expression3h 6m
16. Regulation of Expression3h 31m
17. Viruses37m
- Viruses
  37m
18. Biotechnology2h 58m
19. Genomics17m
- Genomes
  17m
20. Development1h 5m
21. Evolution3h 1m
22. Evolution of Populations3h 53m
23. Speciation1h 37m
24. History of Life on Earth2h 6m
25. Phylogeny2h 31m
26. Prokaryotes4h 59m
27. Protists1h 12m
28. Plants1h 22m
29. Fungi36m
- Fungi
  19m
- Fungi Reproduction
  17m
30. Overview of Animals34m
- Overview of Animals
  34m
31. Invertebrates1h 2m
32. Vertebrates50m
33. Plant Anatomy1h 3m
34. Vascular Plant Transport1h 2m
- Water Potential
  1h 2m
35. Soil37m
- Soil and Nutrients
  20m
- Nitrogen Fixation
  16m
36. Plant Reproduction47m
- Flowers
  33m
- Seeds
  14m
37. Plant Sensation and Response1h 9m
38. Animal Form and Function1h 19m
39. Digestive System1h 10m
- Digestion
  1h 3m
- Blood Sugar Homeostasis
  7m
40. Circulatory System1h 49m
41. Immune System1h 12m
42. Osmoregulation and Excretion50m
- Osmoregulation and Excretion
  50m
43. Endocrine System1h 4m
- Endocrine System
  1h 4m
44. Animal Reproduction1h 2m
- Animal Reproduction
  1h 2m
45. Nervous System1h 55m
- Neurons and Action Potentials
  1h 8m
- Central and Peripheral Nervous System
  46m
46. Sensory Systems46m
- Sensory System
  46m
47. Muscle Systems23m
- Musculoskeletal System
  23m
48. Ecology3h 11m
49. Animal Behavior28m
- Animal Behavior
  28m
50. Population Ecology3h 41m
51. Community Ecology2h 46m
52. Ecosystems2h 36m
53. Conservation Biology24m
- Conservation Biology
  24m

49. Animal Behavior

Animal Behavior

General Biology

49. Animal Behavior

Animal Behavior

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Multiple Choice

In studies of animal social hierarchies, which individual typically gains leadership of a group, and what is a common reason for this?

The youngest member, because they are more adaptable to change.

The individual with the greatest physical strength, because dominance is often established through displays of power.

The member who spends the most time alone, because isolation is a sign of authority.

The individual with the brightest coloration, because it always signals leadership.

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Verified step by step guidance

Understand the context of the question: The problem is asking about animal social hierarchies and the factors that typically determine leadership within a group. This involves understanding behavioral biology and dominance mechanisms in animals.

Review the options provided: The question gives four possible answers, each suggesting a different factor that might determine leadership in animal groups. These include adaptability, physical strength, isolation, and coloration.

Analyze the role of physical strength: In many animal species, leadership or dominance is often established through physical contests or displays of power. This is because physical strength can be a key factor in ensuring survival and access to resources, which are critical in social hierarchies.

Evaluate the other options: While adaptability, isolation, and coloration can play roles in specific contexts (e.g., coloration might signal health or reproductive fitness), they are not universally associated with leadership in animal social hierarchies. Physical strength is more commonly observed as a determinant.

Conclude based on evidence: The individual with the greatest physical strength is most likely to gain leadership because dominance is often established through displays of power. This aligns with observations in many species, such as primates, where stronger individuals often assert dominance over others.