Maternal factors related to body plan of sea urchin

Contents General Abstract / p1 General Introduction / p3 　References / p6 Part I Asymmetrical distribution of mitochondrial rRNA into small micromeres of sea urchin embryos / p8 　Abstract / p9 　Introduction / p10 　Materials and Methods / p12 　Results / p17 　Figures / p20 　Discussion / p25 　References / p28 Part II Sox and other regulatory elements in the promoter region of the sea urchin arylsulfatase Gene / p34 　Abstract / p35 　Introduction / p36 　Materials and Methods / p38 　Results / p41 　Figures / p46 　Discussion / p52 　References / p55