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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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: 68
Views: 220679

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: 15
Views: 17742

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: 302

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: 68
Views: 220679

Re: blank and substrate control give OD reads

... one of the tubes and mix. Check the OD again. That way you control for other potential errors, such as a difference in buffer concentration or a variation in tube thickness (I have no idea what the error is, but starting with identical preps and measuring them before adding enzyme should help ...

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by intandiana
Sun Jan 19, 2014 5:45 am
Forum: Molecular Biology
Topic: blank and substrate control give OD reads
Replies: 9
Views: 1256
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