Study on the Heterosis of the First Generation of Hybrid between Chinese and Korean Populations of Scapharca broughtonii using Methylation-Sensitive Amplification Polymorphism (MSAP)
Bibliographic record
Abstract
<p class="1Body">DNA methylation is known to play an important role in the regulation of gene expression in eukaryotes. In this study, the author assessed the extent and pattern of cytosine methylation in the <em>Scapharca broughtonii</em> genome using the technique of methylation-sensitive amplified polymorphism (MSAP).The results showed that, DNA methylation rate was negatively related to the shell length, the gross weight and the weight of soft body, but positively related to the shell broadness and the shell height; there was significantly different between the parents and the offspring: 31.6% of 5'-CCGG sites in the <em>Patinopecten yessoensis</em> of Korean populations genome were cytosine methylated, and in the <em>Patinopecten yessoensis</em> of Chinese populations were 33%, the methylation rates of F1 was 29.98%; four classes of patterns were identified in a comparative assay of cytosine methylation in the parents and hybrid, increased methylation was detected in the hybrid compared to the parents at some of the recognition sites, while decreased methylation in the hybrid was detected at other sites. It indicated that the alteration of methylation resulted from cross-breeding, and the inbreeding did not change the methylation ratio and patterns; The DNA cytosine methylation has a relationship with the heterosis.</p>
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How this classification was reachedexpand
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 | 0.002 | 0.001 |
| 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 | 0.000 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
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".