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Record W1702620438 · doi:10.1002/047001153x.g102201

Human<scp>X</scp>chromosome inactivation

2005· other· en· W1702620438 on OpenAlexaff
Samuel C. Chang, Carolyn J. Brown

Bibliographic record

VenueEncyclopedia of Genetics, Genomics, Proteomics and Bioinformatics · 2005
Typeother
Languageen
FieldBiochemistry, Genetics and Molecular Biology
TopicGenetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
Canadian institutionsUniversity of British Columbia
Fundersnot available
KeywordsXISTX-inactivationX chromosomeBiologyGeneticsHeterochromatinHistoneGene silencingRNAChromosomeDNAGene

Abstract

fetched live from OpenAlex

Abstract Early in a mammalian female's development, one of her two X chromosomes is silenced, thereby achieving dosage equivalence with the single X chromosome found in males. The process of inactivation is initiated by the untranslated XIST RNA that is expressed solely from the inactive X. Subsequent silencing involves the acquisition of many features of heterochromatin, including late DNA replication, DNA hypermethylation, and specific histone modifications. How the XIST RNA associates in cis with the chromosome from which it is expressed and mediates silencing of one X chromosome remains a focus for ongoing research. The inactive X is not completely refractive to transcription, as approximately 15% of human genes escape the silencing and continue to be expressed from both the active and inactive X chromosomes. The hemizygosity of the X chromosome in males means that X‐linked diseases are distinctively more common in males, and dosage imbalance of other genes may yield additional differences between the sexes.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: Not applicable
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.312
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0010.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.008
GPT teacher head0.234
Teacher spread0.227 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

Study designNot applicable
Domainnot available
GenreOther

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2005
Admission routes1
Has abstractyes

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