Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,919,245,912 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
?

variation
(redirected from phenotypic variation)

   Also found in: Dictionary/thesaurus, Legal, Encyclopedia, Wikipedia 0.01 sec.
variation /var·i·a·tion/ (var″e-a´shun) the act or process of changing; in genetics, deviation in characters in an individual from the group to which it belongs or deviation in characters of the offspring from those of its parents.
antigenic variation  a mechanism by which parasites can escape the immune surveillance of a host by modifying or completely altering their surface antigens.
microbial variation  the range of characteristics with a species used in identification and differentiation.
phenotypic variation  the total variation, for whatever cause, observed in one character.

var·i·a·tion (vâr-shn, vr-)
n.
1. The act, process, or result of varying.
2. The state or fact of being varied.
3. The extent or degree to which something varies.
4. Something that is slightly different from another of the same type.
5. Marked difference or deviation from the normal or recognized form, function, or structure.
6. An organism exhibiting such difference or deviation.
7. A function that relates the values of one variable to those of other variables.

variation (genetic),
n deviation from the genotype in structure, form, physiology, or behavior.

variation
divergence among individual animals of a group. The differences in the morphology or function of an organ or organism, are small enough to stay within the variability of the type organism or organ.


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?
 
Even if selection on phenotypic variation is strong, unless phenotypes are at least to some degree genetically determined, there will be no response to selection in terms of either phenotypic or genetic-level change.
[FIGURE 2 OMITTED] Sequence Variation in covR and Phenotypic Variation To confirm that the covR 3-bp deletion contributed to the observed phenotypic changes in the HH/LC strain, we expressed the covR/S locus from the HH/LC variant on an expression plasmid in the LH/HC variant and GBS strain NEM316.
The toads in that area are geographically isolated from other toads and might have unique genetic and phenotypic variation, according to the Federal Register.
 
 
 
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.