| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Research Abstract |
Odor molecules in the environment are detected by olfactory receptors (ORs). Reflecting the diversity of odorants, vertebrate genomes harbor numerous OR genes. In this study, I have examined the relationships between degeneration of olfactory ability (decrease in the number of OR genes) and development of color vision (acquisition of trichromatic vision). As a result, contrary to the previous view, I showed that there are no direct links between them. Moreover, I investigated genome sequences from diverse organisms including amphioxus, which is a basal chordate species (relatives of vertebrates). I then revealed the origin and the early evolution of OR gene families.
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