RESEARCH BASE
Search 3,721 documents across 34 fields — every claim tier-rated by evidence
3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.
1,332 results for "Old Croghan Man" — page 63 of 67
Z_3_06 — Genetics of Circadian Rhythms
Circadian rhythms — endogenous ~24-hour oscillations in physiology and behavior — are generated by an intracellular transcription-translation feedback loop (TTFL) encoded by a set of core clock genes conserved across ani
Z_3_02 — Epigenetic Inheritance & Transgenerational Effects
Epigenetic inheritance refers to the transmission of phenotypic information across generations through mechanisms other than changes in DNA sequence. The three primary molecular mechanisms — DNA methylation, histone modi
Z_3_09 — Conservation Genetics and Endangered Species
Conservation genetics applies population genetics, genomics, and molecular biology to the preservation of biological diversity. At its core is the recognition that genetic diversity — the raw material for adaptation to c
Z_3_11 — Genetic Mosaicism and Chimerism
A fundamental assumption of genetics — that every cell in an individual's body carries the same genome — is wrong. Genetic mosaicism (the presence of two or more genetically distinct cell populations within an individual
Z_3_05 — Viral Integration and Endogenous Retroviruses
Approximately 8% of the human genome consists of human endogenous retroviruses (HERVs) — the remnants of ancient retroviral infections that integrated into germline cells and were subsequently inherited vertically like a
Z_2_15 — Future of Genomics and Personalized Medicine
Genomics is undergoing a transition from research tool to clinical infrastructure. The cost of whole-genome sequencing (WGS) has plummeted from $2.7 billion (Human Genome Project, 1990–2003) to ~$200 per genome (Illumina
Z_2_13 — Pharmacogenomics and Personalized Medicine
Pharmacogenomics — the study of how genetic variation influences drug response — is among the most clinically actionable applications of human genetics. Adverse drug reactions (ADRs) are the 4th–6th leading cause of deat
Z_2_10 — Genetics of Aging and Progeria
Aging — the progressive decline in physiological function leading to increased vulnerability to disease and death — has a substantial genetic component: twin studies estimate heritability of human lifespan at ~25–30% (He
Z_2_03 — Pharmacogenomics & Ethnobotanical Genetics
Pharmacogenomics — the study of how genetic variation affects drug response — has revealed that enzymes governing drug metabolism, particularly the cytochrome P450 (CYP) superfamily, show extraordinary population-specifi
Z_2_04 — Genetic Disorders and Inborn Errors of Metabolism
Genetic disorders — diseases caused by mutations in single genes (monogenic) or chromosomal abnormalities — affect ~3–5% of live births and collectively represent thousands of distinct conditions catalogued in the Online
Z_2_06 — Nutrigenomics and Diet-Gene Interactions
Nutrigenomics — the study of how genetic variation influences nutritional requirements, dietary responses, and disease susceptibility — and its complement nutrigenetics (how diet influences gene expression) represent a r
Z_2_14 — Genetics of Longevity and Blue Zones
The genetics of human longevity — why some individuals live past 100 while most do not — is a field where heritability is modest, effect sizes are small, and environmental factors dominate, yet several genetic pathways h
Z_2_02 — Telomere Biology & Genetics of Aging
Telomeres — repetitive DNA sequences (TTAGGG)ₙ capping the ends of linear chromosomes — serve as protective buffers against chromosome degradation, end-to-end fusion, and the progressive DNA loss inherent in the end-repl
Z_2_07 — Genetics of Disease Resistance
Infectious disease has been the most powerful selective force shaping the human genome, leaving signatures across thousands of loci. The best-understood example is sickle cell disease (HbS, Glu6Val in HBB): heterozygous
Z_2_05 — Gene Therapy: History and Progress
Gene therapy — the introduction, alteration, or replacement of genetic material within a patient's cells to treat or cure disease — has evolved from a speculative concept to an approved clinical reality over five decades
Z_1_06 — Sex Determination Genetics
Sex determination — the biological process that establishes whether an organism develops as male, female, or an alternative reproductive type — employs remarkably diverse mechanisms across the tree of life. In placental
Z_1_07 — Genetic Recombination and Crossing Over
Genetic recombination — the physical exchange of DNA segments between homologous chromosomes during meiosis — is a fundamental biological process that generates genetic diversity, ensures proper chromosome segregation, a
Z_1_08 — Transposons and Mobile Genetic Elements
Transposable elements (TEs, transposons) — segments of DNA that can move or copy themselves to new genomic locations — are among the most abundant and influential components of eukaryotic genomes. Discovered by Barbara M
Z_1_04 — Gene Expression and Regulation
Gene expression regulation — the molecular mechanisms controlling when, where, and how much each gene is active — is the central process that enables a single genome to produce ~200 distinct cell types, orchestrate embry
Z_1_01 — ENCODE Project, Non-Coding DNA & Epigenetics
The human genome is ~3.2 billion base pairs long, but only ~1.5% encodes proteins. The remaining ~98.5% was once dismissed as "junk DNA." The ENCODE Project (2003–present) revealed that at least 80% of the genome has bio
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