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sexual reproduction |
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reproduction /re·pro·duc·tion/ (re″pro-duk´shun) 1. the production of offspring by organized bodies. 2. the creation of a similar object or situation; duplication; replication.reproduc´tive asexual reproduction reproduction without the fusion of sexual cells. cytogenic reproduction production of a new individual from a single germ cell or zygote. sexual reproduction reproduction by the fusion of a female gamete and a male gamete(bisexual r.) or by development of an unfertilized egg (unisexual r.). somatic reproduction production of a new individual from a multicellular fragment by fission or budding.
sexual reproduction Etymology: L, sexus, sex, re + producere, to produce replication of an organism by the formation of gametes. Generally this requires the fusion of male spermatozoa and female ova. Parthenogenesis is an exception. Also called sexual generation, syngenesis. reproduction 1. the process by which a living entity or organism produces a new individual of the same kind. It may be asexual or sexual. 2. the creation of a similar object or situation; duplication; replication. In sexual reproduction the gonads, or sex glands—the ovaries in the female and the testes in the male—produce the germ cells that unite and grow into a new individual. Reproduction begins when the germ cells unite, the process called fertilization. asexual reproduction reproduction without the fusion of germ cells; usually by budding or fission. cytogenic reproduction production of a new individual from a single germ cell or zygote. sexual reproduction reproduction by the fusion of a female germ cell with a male sexual cell or by the development of an unfertilized egg. somatic reproduction production of a new individual from a multicellular fragment by fission or budding. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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