Dictionary » V » Variation



noun, plural: variations

(1) A difference or deviation (e.g. in structure, form, function) from the recognized norm or standard.

(2) A modification in structure, form or function in an organism, deviating from other organisms of the same species or group.

(3) Mutant; an organism possessing characteristic(s) as a result of mutation.


In genetics, variation refers to an individual that possesses characteristics different from the others of the same kind.

Variation can be measured at the individual level, i.e. differences between individual people, or at the population level, i.e. differences between populations living in different regions.

Word origin: Latin variātiōn- (s. of variātiō), equiv. to variāt(us).

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Results from our forum

DNA testing times

... previously run some assays using that primer set, then the analysis is fairly straightforward - just see if the PCR output matches (within normal variation) for the two organisms tested. OK, someone else's turn...

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by jonmoulton
Fri Apr 11, 2014 2:47 pm
Forum: Genetics
Topic: DNA testing times
Replies: 2
Views: 1207

Re: Re:

... entire worldview. Good point that I would like to add to! The average IQ should be affected by environment and genetics, and the international variations in IQ should reveal how strongly environment affects these averages. The more variation that is associated with environmental influences, ...

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by wildfunguy
Thu Mar 13, 2014 4:13 am
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 72
Views: 269827

Microevolution verus Macroevolution

Evolution is defined as variation in the frequencies of alleles, where an allele is a specific iteration of a given gene. Microevolution is defined as variations in the frequencies of alleles below species level, in a population of organisms. ...

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by hackenslash
Thu Mar 06, 2014 8:57 am
Forum: Evolution
Topic: Microevolution verus Macroevolution
Replies: 16
Views: 21686

Polymorphism and Mutation

... or problems but is normally isolated to the individual. A polymorphism is a distinct population of genes that have changed enough to create variation within a group. It is these changes that can lead to evolutionary changes since if this polymorphic change is beneficial it will continue ...

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by Babybel56
Wed Mar 05, 2014 3:39 am
Forum: Molecular Biology
Topic: Polymorphism and Mutation
Replies: 2
Views: 1803

Re: Brain size=IQ level theory (Blacks vs Whites & Asians)

... not delusions. :D Even other "races" of animals that had been isolated from each other much longer than humans show no appreciable variations in intelligence regardless of habitat or range. Snow leopards are not more intelligent than African leopards. Siberian tigers are not more ...

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by Seth90210
Sun Feb 16, 2014 9:35 pm
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 72
Views: 269827
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