Biological Anthropology Study Guide

Chapter 1: Introduction to Anthropology

Key Terms

  • Anthropology: Study of human societies, cultures, and their development.

  • Cultural Anthropology: Focuses on contemporary non-Western societies.

  • Archaeology: Examines past human cultures through material remains (artifacts).

  • Linguistic Anthropology: Investigates the construction and use of language.

  • Biological Anthropology: Studies the biological aspects of humans and primates.

  • Primatology: Study of non-human primates.

  • Paleoanthropology: Study of ancient human species and their evolution.

  • Forensic Anthropology: Application of anthropology in legal contexts, particularly in identifying remains.

  • Medical Anthropology: Study of how health and illness are shaped by cultural and social factors.

  • Biological Approach: Focus on biological aspects in anthropology.

  • Science: Systematic enterprise that builds and organizes knowledge.

  • Ontology: Study of being and existence.

  • Epistemology: Study of knowledge and justified belief.

  • Hypothesis: A proposed explanation to be tested.

Four Fields of Anthropology

  1. Cultural Anthropology: Studies contemporary non-Western societies.

  2. Archaeology: Examines past human cultures via material remains.

  3. Linguistic Anthropology: Investigates language use and its social implications.

  4. Biological Anthropology: Focuses on biological aspects of humans and primates.

Key Concepts

  • Culture: Shared beliefs, values, and behaviors of a group.

  • Material Culture: Physical objects created and used by a society.

  • Ethnocentrism: Belief that one’s own culture is superior.

  • Cultural Relativism: Understanding cultures on their own terms.

  • Holism: The comprehensive study of all aspects of human life.

Chapter 2: Science and Biological Anthropology

Scientific Method

  1. Observation: Gathering data and identifying phenomena.

  2. Hypothesis Formation: Developing a testable statement.

  3. Testing and Experimentation: Conducting experiments to validate the hypothesis.

  4. Analysis: Evaluating the data and results of the experiments.

  5. Conclusion and Peer Review: Sharing findings for critical evaluation.

Characteristics of Science

  • Objective: Unbiased and impartial.

  • Logical: Based on reasoned arguments.

  • Reproducible: Results can be consistently replicated.

  • Parsimony: Simplicity in explanation is preferred.

  • Predictive: Ability to forecast and test predictions.

  • Public: Open to scrutiny and peer evaluation.

History of Science

  • Ancient Greece: Contributions of Socrates, Plato, Aristotle in natural philosophy.

  • Roman Empire: Galen’s medical discoveries and animal dissections.

  • Middle Ages: Knowledge preservation by the Church; emergence of universities.

  • Scientific Revolution: Key figures like Copernicus, Galileo, and Newton.

Chapter 3: Evolutionary Thought & Genetics

Key Thinkers in Evolutionary Theory

  • Charles Lyell: Introduced uniformitarianism—geological processes occur uniformly over time.

  • Jean-Baptiste Lamarck: Proposed Lamarckian evolution (inheritance of acquired traits).

  • Thomas Malthus: Discussed population growth and resource competition.

  • Charles Darwin & Alfred Russel Wallace: Proposed the theory of natural selection.

  • Gregor Mendel: Established the laws of inheritance (Mendelian Genetics).

Principles of Mendelian Genetics

  • Law of Segregation: Each parent contributes one allele for a trait.

  • Law of Independent Assortment: Traits are inherited independently from one another.

Additional Concepts

  • Genotype vs. Phenotype: Genetic composition (genotype) vs. expressed traits (phenotype).

  • Dominant vs. Recessive Traits: Dominant traits mask recessive traits in heterozygous individuals.

  • Co-dominance & Incomplete Dominance: Both alleles contribute to phenotype in different manners.

  • Polygenic Traits: Traits influenced by multiple genes (e.g., skin color, height).

  • Epigenetics: Environmental factors impacting gene expression.

Chapter 4: Modern Evolutionary Synthesis & Population Genetics

Key Concepts

  • Natural Selection: Favorable traits become more common over generations.

  • Mutation: Introduces genetic variation.

  • Gene Flow: Exchange of genetic information between populations.

  • Genetic Drift: Random changes in allele frequencies.

  • Founder Effect & Bottleneck Effect: Small populations influence genetic diversity.

Hardy-Weinberg Equilibrium Model

  • Predictive model for genetic stability in populations unless affected by evolutionary forces.

  • Formula: p² + 2pq + q² = 1.

Human Adaptation & Disease

  • Sickle Cell Anemia & Malaria: Example of balanced polymorphism—traits that are advantageous in certain environments.

  • Thalassemia & G6PD Deficiency: Genetic adaptations to specific disease environments.

  • Lactose Tolerance: Genetic adaptation linked to dairy consumption habits.

  • High-Altitude Adaptation: Physiological adjustments in populations living at high altitudes.

Speciation

  • Allopatric Speciation: Formation of new species due to geographic isolation.

  • Sympatric Speciation: New species arise without geographic barriers.

  • Macroevolution vs. Microevolution: Large-scale (macroevolution) vs. small-scale (microevolution) evolutionary changes.

  • Adaptive Radiation: Rapid evolution of diverse species to exploit different ecological niches.

Forensic Anthropology

  • Bone Identification: Techniques for determining age, sex, and ancestry from skeletal remains.

  • Taphonomy: Study of decomposition processes and fossilization.

  • Pathology in Bones: Analyzing ancient populations for diseases and injuries.

  • Forensic Applications: Use of anthropology in crime scene investigations to identify remains.

Primatology

  • Primate Traits: Characteristic features include opposable thumbs, stereoscopic vision, and larger brain sizes.

  • Social Behavior: Includes grooming, dominance hierarchies, and kinship bonds among primates.

  • Communication: Examines vocalizations, body language, and facial expressions in primates.

  • Comparative Anatomy: Insights into human evolution through the study of primates.

Neolithic Transition & Population Genetics

  • DNA Analysis: Evidence of migration and intermixing during agricultural expansion.

  • Demic Diffusion: Gradual migration and genetic interbreeding among populations.

  • Population Replacement Hypothesis: Suggests that farming communities replaced hunter-gatherer societies.

  • Ancient DNA Studies: Genetic analysis helps track historical migrations.