S: (n) apogamy ((botany) development of an embryo without fertilization; especially the development in some ferns of a sporophyte from the gametophyte without fertilization)
S: (n) parthenocarpy ((botany) the development of a fruit without fertilization or seeds)
S: (n) parthenogenesis, parthenogeny (process in which an unfertilized egg develops into a new individual; common among insects and some other arthropods)
S: (n) androgenesis, androgeny (male parthenogenesis in which the embryo contains only paternal chromosomes due to the failure of the egg nucleus to participate in fertilization)
S: (n) gynogenesis (female parthenogenesis in which the embryo contains only maternal chromosomes due to the failure of the sperm to fuse with the egg nucleus)