On the evolution of anisogamy from isogamous monoecy and on the origin of sex.
D005075:Biological Evolution; D002454:Cell Differentiation; D002459:Cell Fusion; D005260:Female; D005306:Fertilization; D005854:Germ Cells / Q000166:cytology; D008297:Male; D012723:Sex; D012732:Sex Determination Analysis; D012733:Sex Differentiation