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The purpose of this paper is to analyze L 1 traces in the errors of Japanese EFL learners'written English. A total of 178 essays (5978 words) written by Japanese junior college students enrolled in an EFL course were used (91 argumentative essays and 87 narrative essays). Four error types were selected which were identified as influences of L 1 (Japanese), and the distribution of four error types as well as error frequency were analyzed according to the students'levels from the beginner to the pre-intermediate levels. The results showed that: 1) the distribution of errors found in the English or L2 essays reflected differences according to students'proficiency from the beginner to the pre-intermediate levels and that the choice of essay topic may be a factor; 2) in argumentative essays, errors with the sentence-initial because fragment are prevalent in all proficiency levels; 3) in narrative essays, the error frequency of the anomalous use of the be verb decreases as proficiency increases; and 4) students at the low proficiency level tend to make errors of limited error types repeatedly and did not commit errors of other error types due to their limited knowledge of sentence variations.

現在多くの日本の大学では、グローバルな教育内容と環境を促進することが火急の課題である。岡山大学では英語教育の質の向上と授業科目の英語での提供の２つに取り組んでいるが、その実践においてCLIL（内容言語統合型学習）が有用であると考えられる。また日本の高等教育機関において、CLIL を既に実践あるいは導入を検討している教育関係者と経験やアイデアを共有し、ネットワークを作って今後の情報交換を行うことも非常に重要である。そこで岡山大学では2016 年2 月にフィンランドから２名の講師を招き、３日間のCLIL ワークショップを開催した。この論文では４大学の参加者４名がワークショップで紹介された２つの大学の異なったCLIL モデルについて報告する。またワークショップで行った様々なアクティビティを通して参加者が学び取ったことや成果についても記述する。

Because self-incompatibility loci are maintained heterozygous and recombination within self-incompatibility loci would be disadvantageous, self-incompatibility loci are thought to contribute to structural and functional differentiation of chromosomes. Although the hermaphrodite chordate, Ciona intestinalis, has two self-incompatibility genes, this incompatibility system is incomplete and self-fertilization occurs under laboratory conditions. Here, we established an inbred strain of C. intestinalis by repeated self-fertilization. Decoding genome sequences of sibling animals of this strain identified a 2.4-Mbheterozygous region on chromosome 7. A self-incompatibility gene, Themis-B, was encoded within this region. This observation implied that this self-incompatibility locus and the linkage disequilibrium of its flanking region contribute to the formation of the 2.4-Mb heterozygous region, probably through recombination suppression. We showed that different individuals in natural populations had different numbers and different combinations of Themis-B variants, and that the rate of self-fertilization varied among these animals. Our result explains why self-fertilization occurs under laboratory conditions. It also supports the concept that the Themis-B locus is preferentially retained heterozygous in the inbred line and contributes to the formation of the 2.4-Mb heterozygous region. High structural variations might suppress recombination, and this long heterozygous region might represent a preliminary stage of structural differentiation of chromosomes.

P(論文)