Variable number of tandem repeat locus ( VNTR locus) is any DNA sequence that exist in multiple copies strung together in a variety of tandem lengths. The number of repeat copies present at a locus can be visualized by means of a Multi-locus or

Multiple Loci VNTR Analysis Multiple loci VNTR analysis (MLVA) is a method employed for the genetic analysis of particular microorganisms, such as pathogenic bacteria, that takes advantage of the polymorphism of tandemly repeated DNA sequences. A " VNTR" is a "variable-numbe ...

(

MLVA Multiple loci VNTR analysis (MLVA) is a method employed for the genetic analysis of particular microorganisms, such as pathogenic bacteria, that takes advantage of the polymorphism of tandemly repeated DNA sequences. A " VNTR" is a "variable-numbe ...

). In short,

oligonucleotide Oligonucleotides are short DNA or RNA molecules, oligomers, that have a wide range of applications in genetic testing, research, and forensics. Commonly made in the laboratory by solid-phase chemical synthesis, these small bits of nucleic acids ...

primers are developed for each specific tandem repeat locus, followed by

PCR PCR or pcr may refer to: Science * Phosphocreatine, a phosphorylated creatine molecule * Principal component regression, a statistical technique Medicine * Polymerase chain reaction ** COVID-19 testing, often performed using the polymerase chain r ...

and

agarose gel electrophoresis Agarose gel electrophoresis is a method of gel electrophoresis used in biochemistry, molecular biology, genetics, and clinical chemistry to separate a mixed population of macromolecules such as DNA or proteins in a matrix of agarose, one of ...

. When the length of the repeat and the size of the flanking regions is known, the number of repeats can be calculated. Analysis of multiple loci will result in a

genotype The genotype of an organism is its complete set of genetic material. Genotype can also be used to refer to the alleles or variants an individual carries in a particular gene or genetic location. The number of alleles an individual can have in a ...

References

Genetics {{Genetics-stub