Characteristics and analysis of simple sequence repeats in the cotton genome based on a linkage map constructed from a BC<sub>1</sub>population between<i>Gossypium hirsutum</i>and<i>G. barbadense</i>
Why this work is in the frame
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Bibliographic record
Abstract
In the past decade, several molecular maps of cotton have been constructed using diverse DNA molecular markers and mapping populations. In this study, an interspecific linkage map of allotetraploid cotton was developed using a BC1 population ((Gossypium hirsutum x G. barbadense) x G. hirsutum). This map was genome-wide and was based entirely on simple sequence repeat (SSR) markers. Forty-four linkage groups were assigned to 26 chromosomes, with 917 loci spanning 5452.2 cM of the genome. The average distance between loci was 5.9 cM, providing uniform coverage of the A subgenome and D subgenome. Characteristics of this map were analyzed in detail, including the distributions of genomic SSRs, expressed sequence tag (EST)-SSRs, and distorted markers. Furthermore, the relationships between motif characteristics (size, type, length) and the level of polymorphism in EST-SSRs were also surveyed. The results showed that tetranucleotide and dinucleotide repeats had similar levels of polymorphism, and ACAT, AC, and ACT repeats had the highest polymorphism rates. Loci with lengths of 27 bp, 33 bp, and 24 bp were more likely to be polymorphic. This work will provide information to assist in designing future EST-SSRs.
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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 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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