Dictionary » I » Inversion

Inversion

Definition

noun, plural: invesions

(general) The reversal of state, form, position, direction, order, or course, such as turning inward or inside out.

(meteorology) An atmospheric condition in which the air temperature increases with altitude; hence, resulting in the ground being colder than the surrounding air.

(geology) The folding back of strata upon themselves resulting in a seemingly order of succession.

(chemistry) The conversion of sucrose from dextrorotatory to levorotatory or vice versa.

(genetics) A defect in the chromosome in which a segment of the chromosome breaks off and reinserted in the same place but in the reverse direction relative to the rest of the chromosome. Inversions are of two types: paracentric inversion and pericentric inversion.

(anatomy) The movement of sole towards the median plane.

(zoology, psychology) (1) The switching from one sex to the opposite in certain animal species, (2) An outdated term fro homosexuality, especially popular during the early psychoanalysis.


Supplement

Word origin: Latin inversiō, inversiōn-, from inversus, past participle of invertere: to invert.
Related forms: inverse (adjective), inverted (adjective), invert (verb).
Related phrases: chromosomal inversion (genetics), pericentric inversion (genetics), paracentric inversion (genetics), sexual inversion (psychology).
Synonym: eversion (general).


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


cancers, chromosome mutations

chromosome mutations can be deletion, duplication, inversion or translocation Over-division isn't always caused by altered DNA sequences that code for altered proteins that do not perform their jobs, it can be caused by the same protein being present ...

See entire post
by wildfunguy
Thu Aug 16, 2012 7:02 pm
 
Forum: Genetics
Topic: cancers, chromosome mutations
Replies: 6
Views: 6760

chromosome mutations and cell division

... a chromosome mutation covers the gene, does this mean that this case is also a gene mutation? chromosome mutations can be deletion, duplication, inversion or translocation

See entire post
by biologyisgreat
Fri Jul 27, 2012 4:24 pm
 
Forum: Genetics
Topic: chromosome mutations and cell division
Replies: 2
Views: 2755

I need some help...

... pH 7.0 buffer 2.0 mL of distilled water A) MAKING THE ENZYME SOLUTION Put 25 drops of Lactaid® into 25 mL of distilled water. Mix the solution by inversion several times and store it on ice until needed." (http://capital2.capital.edu/faculty/wbecktel/Enzyme.htm) "Assay Method: A chromogenic ...

See entire post
by fubario
Fri Mar 16, 2012 3:34 am
 
Forum: Molecular Biology
Topic: I need some help...
Replies: 3
Views: 3088

Re: Theories - Origin of Life

... New Scientist article. As you point out, though, the paper's abstract says,   shifts over time (24 years between samples on average) in chromosome inversion frequencies That says it all. Note the words "shifts" and "frequencies". I don't read New Scientist, so I don't know the ...

See entire post
by wbla3335
Thu Feb 16, 2012 4:44 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 988090

Re: Theories - Origin of Life

... research abstract said this   We determined the magnitude and direction of shifts over time (24 years between samples on average) in chromosome inversion frequencies and in ambient temperature for populations of the fly Drosophila subobscura  on three continents.  The New scientist comment reads ...

See entire post
by scottie
Thu Feb 16, 2012 2:28 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 988090
View all matching forum results

This page was last modified 22:57, 27 June 2008. This page has been accessed 112,344 times. 
What links here | Related changes | Permanent link