Budget Amount *help |
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
|
Outline of Final Research Achievements |
Maternal effects of mutations of a gene linked to spiral cleavage polarity cause significantly large individual variations in blastomere configuration in gastropod model systems. By analyzing the dependence of these individual variations on genomic background, this study verified the resolution of a paradox in the evolution of left-right reversal in spiral cleavage, which has recurrently occurred only in gastropod groups with internal fertilization despite positive frequency-dependent selection against reversal mutants resulting from their physical difficulty in copulation with the non-reversed wild type.
|