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Behavioral neuroscience
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=== Genetic techniques === * [[Quantitative trait loci|QTL mapping]] β The influence of a gene in some behavior can be statistically inferred by studying [[inbred strains]] of some species, most commonly mice. The recent sequencing of the [[genome]] of many species, most notably mice, has facilitated this technique. * [[Selective breeding]] β Organisms, often mice, may be bred selectively among inbred strains to create a [[recombinant congenic strain]]. This might be done to isolate an experimentally interesting stretch of [[DNA]] derived from one strain on the background genome of another strain to allow stronger inferences about the role of that stretch of DNA. * [[Genetic engineering]] β The genome may also be experimentally-manipulated; for example, [[knockout mice]] can be engineered to lack a particular gene, or a gene may be expressed in a strain which does not normally do so (the 'transgenic'). Advanced techniques may also permit the expression or suppression of a gene to occur by injection of some regulating chemical.
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