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.
3,721 results for "Rajaraja I" — page 47 of 187
Z_1_17 — Environmental Epigenetics & Toxicogenomics
Environmental epigenetics examines how chemical exposures, nutritional states, and ecological stressors modify gene expression without altering DNA sequence — through DNA methylation, histone modifications, and non-codin
Z_1_02 — Human Chromosome 2 Fusion — Evidence of Primate Ancestry
Humans possess 46 chromosomes (23 pairs), while all other great apes — chimpanzees, gorillas, and orangutans — possess 48 chromosomes (24 pairs). This discrepancy was explained in the 1980s–1990s when molecular cytogenet
Z_1_16 — Transposable Elements: Jumping Genes and Genome Evolution
Transposable elements (TEs) — sequences of DNA capable of moving ("jumping") from one genomic location to another — constitute approximately 45% of the human genome and up to 85% of the maize genome, making them the sing
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
Z_1_21 — Riboswitches and RNA Thermometers
Riboswitches are structured RNA elements typically found in the 5' untranslated regions (5' UTRs) of bacterial messenger RNAs that directly sense and bind specific small-molecule metabolites — changing their three-dimens
Z_1_18 — Junk DNA & the ENCODE Controversy: Function, Noise, and the Human Genome
The term "junk DNA" — coined by Susumu Ohno (1972) to describe non-coding DNA sequences in eukaryotic genomes that appeared to have no functional role — ignited one of the most contentious debates in modern genomics: how
Z_1_05 — Genomic Imprinting and Parent-of-Origin Effects
Genomic imprinting is an epigenetic phenomenon in which a gene's expression depends on whether it was inherited from the mother or the father — violating the standard Mendelian assumption that both parental copies functi
Z_1_03 — Human Genome Project and Its Legacy
The Human Genome Project (HGP), launched in 1990 and completed in 2003, was the largest coordinated biological research effort in history — a $3 billion, 13-year international collaboration to sequence all ~3.2 billion b
Z_1_19 — Non-Coding RNA and Gene Regulation
Non-coding RNAs (ncRNAs) — RNA molecules that are transcribed from the genome but do not encode proteins — have emerged as central regulators of gene expression, challenging the classical "one gene–one protein" paradigm
Z_1_15 — Long Non-Coding RNA: The Dark Matter of the Transcriptome
Long non-coding RNAs (lncRNAs) — RNA transcripts longer than 200 nucleotides that do not encode proteins — represent one of the most surprising and rapidly expanding frontiers of molecular biology. The human genome encod
Z_1_10 — Chromosome Evolution and Karyotype
Karyotype — the number, size, and morphology of chromosomes in a cell — varies enormously across species, from n=1 in the ant Myrmecia pilosula to n=630 in the fern Ophioglossum reticulatum. Humans have 2n=46 (23 pairs),
Z_1_12 — Genome Architecture and 3D Organization
The human genome — approximately 6.4 billion base pairs of DNA — is packed into a nucleus only ~6 μm in diameter. If stretched end-to-end, the DNA of a single human cell would extend about 2 meters, yet it is packaged an
Z_1_20 — RNA World Hypothesis
The RNA World hypothesis proposes that life on Earth passed through an early stage in which RNA molecules served as both the carriers of genetic information AND the catalysts of chemical reactions — performing the dual r
Z_1_11 — Polyploidy and Genome Duplication
Polyploidy — the possession of more than two complete sets of chromosomes — is a major force in genome evolution, particularly in plants and some animal lineages. Susumu Ohno (1970) proposed that whole genome duplication
Z_1_09 — Copy Number Variation and Structural Genomics
Copy number variations (CNVs) — segments of DNA ranging from ~1 kilobase to several megabases that are present in variable numbers across individuals — represent the most impactful form of genetic variation in the human
Z_1_14 — Chromatin Remodeling: Epigenetic Architecture of the Genome
Chromatin remodeling — the dynamic restructuring of the protein-DNA complex (chromatin) that packages eukaryotic genomes — is a central mechanism of gene regulation and a cornerstone of epigenetics. In eukaryotic cells,
Z_4_08 — The Ribosome: The Molecular Machine of Translation
The ribosome — the massive molecular machine responsible for translating the genetic information encoded in messenger RNA (mRNA) into functional proteins — is arguably the most important macromolecular complex in all of
Z_4_21 — Autophagy Mechanisms
Autophagy (from Greek, "self-eating") is a fundamental cellular process by which eukaryotic cells degrade and recycle their own components — damaged organelles, protein aggregates, intracellular pathogens, and surplus cy
Z_4_20 — Quorum Sensing in Bacteria
Quorum sensing (QS) is a chemical communication system used by bacteria to coordinate gene expression in response to population density — enabling single-celled organisms to exhibit collective behaviors that would be ine
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