| Budget Amount *help |
¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2019: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2018: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Outline of Final Research Achievements |
Genes coding proteins responsible for the seminal coagulation (SEMG1 and SEMG2) were analyzed in gibbons of three genera to find that 1) the repeat structure of the SEMG1 was consistent in three genera but of the SEMG2 was different in each genus. When dN / dS was determined for the partial sequence of the SEMG2, a strong correlation with the testes weight ratio was found in primates. This result supported higher sperm competition in the multi-male groups in the primates.
GRAS-Di analysis was performed on the genomes of seven species / subspecies of the gibbons, and it was supported that the divergence of gibbons in the continental and in island regions occurred about 3.5 million years ago and then divergence among the Sunda island species took place. Evidence of introgression was detected in several species of the genus Hylobates to indicate that the history of gene flow between these species is relatively old.
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