Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,920,898,420 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

parthenogenesis

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.02 sec.
par·the·no·gen·e·sis (pärth-n-jn-ss)
n.
A form of reproduction in which an unfertilized egg develops into a new individual, occurring commonly among insects and certain other arthropods.

parthe·no·ge·netic (-j-ntk) adj.

parthenogenesis
[pär′thənōjen′əsis]
Etymology: Gk, parthenos, virgin, genesis, origin
a type of nonsexual reproduction in which an organism develops from an unfertilized ovum, as in many simpler animals. The development of the unfertilized ovum may be artificially induced through mechanical or chemical stimulation. Also called unicellular reproduction. parthenogenetic, parthenogenic, adj.

parthenogenesis [pahr″thĕ-no-jen´ĕ-sis]
a modified form of sexual reproduction in which a gamete develops into a new individual without the fertilization of an oocyte by a spermatozoon, as in certain arthropods and other animals; it may occur as a natural phenomenon or be induced by chemical or mechanical stimulation (artificial parthenogenesis). adj., adj parthenogenet´ic.

parthenogenesis
asexual reproduction in which an egg develops without being fertilized by a spermatozoon, as in certain lower animals, especially arthropods; it may occur as a natural phenomenon or be induced by chemical or mechanical stimulation (artificial parthenogenesis).


Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link
Feedback
Add definition
Mentioned in?  References in periodicals archive?   Medical browser?   Full browser?
 
Topics such as stem cell research, genetic diseases, cloning, genetically modified organisms, parthenogenesis, and chimeras are included, as are ethical problems and reviews of basic and cell biology.
We will not accept a solution that will arise from parthenogenesis [virgin birth] and that will provide Turkey with interventionist rights," he added.
The first case of parthenogenesis in sharks was documented in May 2007, when a female hammerhead which had had no contact with male in the previous three years, gave birth at an aquarium in Omaha, Nebraska.
 
 
 
Medical Dictionary
?

Terms of Use | Privacy policy | Feedback | Advertise with Us | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.