Restriction Fragment Length Polymorphism : Tracing chromosomes from parent to offspring |
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Restriction Fragment Length Polymorphism : Tracing chromosomes from parent to offspring
If the DNA of an individual has gained a restriction site by base substitution, then enzymic cleavage yields at least one additional fragment.
Conversely, if a mutation results in loss of a restriction site, fewer fragments are produced by enzymic cleavage. An individual who is heterozygous for a polymorphism has a sequence variation in the DNA of one chromosome and not in the homologous chromosome. In such individuals, each chromosome can be traced from parent to offspring by determining the presence or absence of the polymorphism.
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