Comparison of the Internal Transcribed Spacer (ITS) Regions Between Hybrid and Their Parents in Scallop
Bibliographic record
Abstract
The remarkable heterosis of the heterozygous F1 derived from Zhikong scallop Chlamys farreri (?) and Japanese scallop Patinopecten yessoensis (?) has been proved during cultured process, and some genetic characteristics analysis have also been conducted using some molecular markers ISSR, SSR, MSAP, and so on. However, no study about the comparison between hybrid offspring and parents based on the nuclear ribosomal DNA internal transcribed spacer (ITS) was explored. In this study, the ITS-1 and ITS-2 of the C. farreri, P. yessoensis and their hybrid were amplified by PCR using specific primers and characteristics of those ITS regions, genetic regularity were analyzed. The results suggested that ITS-2 (334 bp- 352 bp) were a little longer than ITS-1 (241 bp- 256 bp) in length while the average GC content were lower than AT in most individuals, and they all had high genetic variation. Also, the gene flow between the hybrid and female parents were higher than that of hybrid and male parents. Our data implied a commonality that the ITS regions of offspring shared more similarity with that of female parents. This data in the present investigation will help for further studies in heterosis mechanism and utilization of hybrid scallop in China.
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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 | 0.000 | 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 | 0.000 | 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".