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Genome size (C value) is an important index for phylogenetic studies. Haliotidae (abalones) includes many species widely distributed throughout the world’s oceans, which makes this family interesting for phylogenetic studies. To examine Haliotidae phylogeny, we determined the C value and adenine and thymine base pair content (AT %) of Haliotis discus hannai(More)
Cnidarians are considered ancestral metazoans and, therefore, are important taxa for studying animal evolution. However, little is known about the group’s genome size (C value), which is an important parameter in whole-genome sequencing. To address this issue, we measured the C values of 27 cnidarian species from Japan, using flow cytometry, and found that(More)
Parameters of walking at ordinary, fast and slow speeds in 30 male and 30 female young adults were investigated. More than 10 trials were made for each speed by each subject. The number of subjects and trials was large enough to permit a statistical analysis. The focus of the study was the movement of the point where the resultant foot-ground force(More)
Photographs (norma occipitalis) of Japanese adult skulls (n = 171) were mathematically described with Fourier analysis to assess shape changes over time. The materials used were adult male skulls excavated from the Kanto District and covered four age-periods; Jomon (2000-1000 BC). Kamakura (14C. AD), Muromachi (15C. AD). and Edo (18C. AD). Mean raw data(More)
Octopus (Amphioctopus) areolatus is an important marine cephalopod in Japan. We examined its diploid chromosome number, karyotype, and genome size (C value), and performed fluorescence in situ hybridization (FISH) using a vertebrate telomeric probe. The diploid chromosome number was 60 in embryonic cells, with 24 pairs of metacentric chromosomes, four pairs(More)
The form in frontal view of the recent human facial skeleton, including the frontal bone, was simulated under the condition of uniform strength to cope with the forces in the chewing action, by using the two-dimensional frame model made of members with step-wise variable cross-sections and by using the finite element analysis method. The simulation, in(More)
Experiments were conducted to examine the visibility of different floor levels from a stumbling point of view. The test subjects were the elderly and the young, and we compared the difference between the two. We investigated eye movement while they were scanning the different floor levels. The results were as follows: 1) The height of different floor levels(More)
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