Repetitive A-T rich DNA sequences from the Y chromosome of the Mediterranean fruit fly,<i>Ceratitis capitata</i>
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Bibliographic record
Abstract
Copies of a repetitive DNA sequence distributed over 90% of the length of the long arm of the Y chromosome of the Mediterranean fruit fly, Ceratitis capitata (medfly), have been characterized. Sequencing reveals that these repeats, ranging in size from approximately 1.3 to 1.7 kb, are A-T rich overall (67%). In most cases the repeat units appear to occur in tandemly linked arrays. The repeat copies also all contain a highly similar internal region, approximately 200 bp in length, with a more extreme A-T content bias. This internal region, designated as the AT element, exhibits an A-T content of at least 83%. This exceeds what has been described for any comparable element among invertebrates. Using primers designed from the DNA sequence, PCR amplification of an internal region encompassing the AT element also reveals that these sequences are present only in the male genome in different strains of the medfly.
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Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.005 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it