• The Zoological Society Korea : Newsletter
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• v.12 no.2
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• pp.86.2-86
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• 1995

• Bioindustry News
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• v.10 no.2
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• pp.10-18
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• 1997

• Proceedings of the Korea Society of Environmental Biology Conference
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• 2006.06a
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• pp.14-15
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• 2006

• Proceedings of the Korea Society of Environmental Biology Conference
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• 2004.12a
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• pp.9-10
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• 2004

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2006.09a
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• pp.17-26
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• 2006

• The Zoological Society Korea : Newsletter
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• v.15 no.1
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• pp.4-7
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• 1998

• Journal of Science Education
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• v.34 no.1
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• pp.164-174
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• 2010

The purpose of this study was to find out taxonomic characteristics of objectives infered from questions of summative evaluation by analyzing those objectives with Bloom's revised taxonomy of educational objectives. 1,711 questions of midterm and final examinations collected from 25 middle schools were analyzed to classify objective of each question. The major findings of the study were as follows: first, from the analysis of objectives in the knowledge dimension, the assessment of factual knowledge was most prevailing(67.6%) in the biology summative evaluation. In the cognitive process dimension, memory assessment was most dominant(76.1%). Thus, the main objectives of evaluation leaned toward particular classes in the Bloom's revised taxonomy, which was different from the findings of earlier studies on the weights of evaluation areas. Second, the level of the objectives should be determined in consideration of the grade of middle schoolers, as their cognitive level improves with grade. In fact, however, there was no difference among three grades in characteristics of objective taxonomy.

• Journal of Life Science
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• v.13 no.6
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• pp.856-864
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• 2003

The 16S rRNA gene is the most common gene in the phylogenetic analysis of procaryotes. However very high conservative of 16S rRNA has limitation in the discrimination of highly related organisms, hence other molecule was applied in this study and the result was compared with that of 16S rRNA. Three COGs (Clusters of Orthologous of protein) were only detected in 42 procaryotes ; transcription elongation facto. (COG0195), bacterial DNA primase (COG0358) and uridylate kinase (COG0528). Uridylate kinase gene was selected because of the similarity and one single copy number in each genome. Bacteria, belong to same genus, and Archaebacteria were same position with high bootstrap value in phylogenetic tree like the tree of 16S rRNA. However, alpha and epsilon Proteobcteria showed different position and Spirochaetales of Eubarteria was grouped together with Archaebacteria unlike the result of 16S rRNA. Uridylate kinase may compensate the problem of very high conservative of 16S rRNA gene and it would help to access more accurate discrimination and phylogenetic analysis of bacteria.

• Journal of The Korean Association For Science Education
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• v.18 no.4
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• pp.485-491
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• 1998

In this study, the achievement of Korean biology gifted-students was compared with that of International Biology Olympiad(IBO) participants to explore international achievement level of biology and to suggest the need of teaching program for biology gifted-students. Korean thirty gifted-students were selected through test by Korean Biology Olympiad Committee. They examined theoretical test two times in January and March. 1998. Theoretical part consisted of eight domains as follows; cell biology. anatomy and physiology of plants, anatomy and physiology of animals, ethology. genetics and evolution, ecology, systematics, and microbiology. As a result, Korean biology gifted-students had lower achievement than IBO participants in eight domains. and especially much lower achievement in ethology and systematics. Though thirty Korean gifted-students were found to had much lower achievement than lBO participants, four higher rankers of them are in prospect of winning bronze medals. Thus, it is necessary to develope an appropriate teaching program for biology gifted-students with theoretical lectures and inquiry activities.

• Korean Journal of Environmental Biology
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• v.17 no.3
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• pp.321-330
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• 1999

Nematodes were isolated using silkwom trap through the investigation of 100 soil samples from various biotopes in Korea. The 30 nematode strains from soil and dead insects by the pathogenicity aganinst silkworms (Bombyx mori mori) and insect pests of Calliphora vomitoria, Pseufazetia separata, Palomena angulosa, and Melolontha incana. Mortailty of the silkworm larvae and pupae were as high as 100% by nematode infection, those of insect of pests were varied from 20 to 100%. The 30 strains of entemopathogenic nematodes were classified into five groups of Rhabditidae, Diplogatroidae, Heterorhabitidae, Steinernematidae, and Tylenchida by morphological criteria. The genetic relationships among the 30 nematode strains were analyzed by various RAPD bands with twenty primers. The 30 nematode strains were classified into six major subgroups on the basis of the genetic similarity coefficient of 0.853. The grouping by RAPD was agree with those of morphological taxa in discrimination of the higher group, however, was not completely agree in the subgroup. The family Steinernematidae belong to Rhabditida was clarified as closer to the Tylenchida, rather than the other Rhabditida of Heterorhabitidae, Rhabditidae, and Diplogatroidae in genetic distance valule. From the result of the morphological classification and RAPD of the genomic DNA showed that genetic relationship analysis furnish infurmation on phylogenetic classification and relationships of entomopathogenic nematodes. The application of genetic similarity will overcome the limitation of taxonomy and classification of morphologically simple nematode. Several primers were confirmed those utility of identification for individual nematode strains, the methods of molecular genetics secured the simplicity, rapidity and accuracy on the selection of entomopathogenic nematodes.