Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,920,898,487 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
(redirected from parthenogenetically)

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 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?
 
The other likely cause, particularly with the mild, open weather that we had in late August and September, is a tiny little green or yellow aphid known as the Violet Aphid, Myzus ornatus, that builds its population up parthenogenetically (without mating) on the undersides of leaves of pansies and violas and these can destroy young plants very quickly, causing them to collapse and die in a matter of weeks.
For example, the whiptail lizard, which lives in the American Southwest, reproduces parthenogenetically (having no male contribution), and their colonies consist mostly of clones of females.
2) Following his wife's abrogation of her civic duties--spectacularly represented when her bosoms surrealistically fly off like a set of balloons--the now hermaphroditic Husband heroically bears the Nation's children parthenogenetically.
 
 
 
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.