1. Faculty of Science, Rikkyo University
2. Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency
3. Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo
4. Department of Biological Science and Chemistry, Faculty of Science, Yamaguchi University
5. Chromosome Dynamics Laboratory, RIKEN Advanced Science Institute
6. Symbiosis and Cell Evolution Laboratory Center for Frontier Research, National Institute of Genetics