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Search 3,717 documents across 34 fields — every claim tier-rated by evidence
574 results for "horizontal gene transfer" — page 5 of 29
L_4_03 — Genetic Clocks and Molecular Dating
The molecular clock — the concept that DNA and protein sequences accumulate mutations at approximately regular rates over time — provides a powerful tool for dating evolutionary divergences independently of the fossil re
L_4_17 — Transgenerational Epigenetic Trauma
Transgenerational epigenetic inheritance of trauma — the hypothesis that severe stress, famine, or psychological trauma experienced by one generation can alter the epigenetic marks (DNA methylation, histone modifications
L_4_02 — Mendel, Inheritance, and the Rediscovery of Genetics
Gregor Johann Mendel (1822–1884), an Augustinian friar at the St. Thomas Abbey in Brno (then part of the Austrian Empire), conducted the foundational experiments in genetics by systematically crossing garden pea plants (
L_4_11 — Genetic Engineering in Ancient Mythology — Directed Modification Claims
Across virtually every major mythological tradition, human creation is depicted as a deliberate act of divine engineering — gods fashioning humans from raw materials (clay, blood, corn, breath, bone) through intentional,
L_4_12 — CRISPR Gene Drives and Population Genetics Ethics
CRISPR gene drives — genetic engineering systems that combine CRISPR-Cas9 gene editing with super-Mendelian inheritance to spread a modified gene through an entire wild population far faster than natural selection — repr
L_4_08 — Genetic Genealogy and Forensic Genomics
Genetic genealogy — the use of DNA testing for genealogical purposes — has undergone an explosive expansion since the early 2000s, driven by direct-to-consumer (DTC) genetic testing companies (23andMe, AncestryDNA, MyHer
L_2_02 — Population Genetics and Hardy-Weinberg Equilibrium
Population genetics — the mathematical study of allele frequency change in populations — provides the quantitative framework underlying evolutionary biology. The Hardy-Weinberg principle (1908), independently derived by
L_2_08 — East Asian Genetics and Population History
East Asia — comprising China, Japan, Korea, Mongolia, Taiwan, and mainland Southeast Asia — is home to the largest human population concentration on Earth and harbors a complex genetic history shaped by major north-south
L_2_17 — Pacific Islander Genetics: Austronesian Ancestry, Denisovan Introgression, and Oceanian Genomics
Pacific Islander populations — spanning Melanesia, Micronesia, and Polynesia — harbor some of the most genetically complex and scientifically informative genomes in human biology. Their genetic history records multiple d
L_2_16 — Genetic Diversity and Inbreeding: Population Health Across History
Genetic diversity — the total amount of genetic variation within a population — is a fundamental determinant of population health, adaptive potential, and long-term survival. The loss of diversity through inbreeding (mat
L_2_07 — European Genetics and Three Ancestral Populations
The genetic history of Europe has been revolutionized by ancient DNA, revealing that most present-day Europeans can be modeled at a broad level as mixtures of three major ancestral components assembled over the past ~10,
L_2_01 — Domestication Genetics — How Humans Reshaped Life
Domestication — the genetic transformation of wild species into human-dependent organisms — ranks among the most consequential biological processes in Earth's history.
L_2_03 — Ancient African Genetics
Africa harbors the greatest human genetic diversity on Earth — a direct consequence of being the continent of human origin, where populations have accumulated genetic variation for ~300,000+ years. Modern African populat
L_2_06 — South Asian Genetics and Population History
South Asia harbors one of the most genetically diverse and internally structured population histories of any world region, reflecting deep settlement, repeated admixture, and long periods of extreme endogamy. The best-su
L_2_15 — Population Structure of the Ancient Near East: Farming Spread Genetics
The Neolithic Revolution — the independent invention of agriculture in the Fertile Crescent (~10,000-8,000 BCE) — was one of the most consequential transformations in human history, and ancient DNA has revealed that the
L_2_05 — Americas Peopling Genetics
The peopling of the Americas is one of the clearest cases where ancient DNA and archaeology have converged to overturn an older narrative. The core model now favored by genetics is that the main ancestry of Indigenous Am
L_2_04 — Oceanian Genetics and Pacific Migration
The human settlement of Oceania represents the last major expansion of Homo sapiens across the globe, and the most remarkable feat of maritime exploration in human history. It occurred in two major phases separated by ~4
L_2_09 — Genetic History of the Americas: Clovis to Contact
The genetic history of the Americas — from the initial peopling of the New World to the devastating population collapse after European contact — is one of the most intensively studied and rapidly evolving areas of paleog
L_3_06 — Genetics of Intelligence and Cognition
The genetics of intelligence — one of the most studied yet contentious areas in behavioral genetics — has established that cognitive ability, as measured by standardized tests, has a substantial heritable component (~50–
L_3_14 — Genetic Bottleneck Recovery and Founder Effects
A genetic bottleneck occurs when a population's size is drastically reduced, causing a random loss of genetic variation (alleles) that cannot be recovered through subsequent population growth. Founder effects are a speci
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