Molecular Techniques for Genotyping
- Authors: Shalini Gupta1, Somali Sanyal2, Suresh Kumar Yadav3, Madan Lal Brahma Bhatt4
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View Affiliations Hide Affiliations1 Department of Oral Pathology and Microbiology, King Georges Medical University, Lucknow 226003, India 2 Department of Oral Pathology and Microbiology, King Georges Medical University, Lucknow 226003, India 3 Department of Oral Pathology and Microbiology, King Georges Medical University, Lucknow 226003, India 4 Department of Oral Pathology and Microbiology, King Georges Medical University, Lucknow 226003, India
- Source: Protocols used in Molecular Biology , pp 74-88
- Publication Date: January 2020
- Language: English
Molecular Techniques for Genotyping, Page 1 of 1
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Genotyping is a process of determining the genetic constituent/genetic makeup "genotype" of an organism by examining the individual DNA sequence and comparing to a reference or other individual sequence. It helps the researchers to explore the genetic constitution, genetic linkages or variations like Single Nucleotide Polymorphisms (SNP) or multi-nucleotide changes in DNA. Identification of genotypes is also useful for determining their role in phenotypic expressions. Genotyping is an essential tool for researchers to find out disease-associated genes and gene variants. Genotype determined can also be used for the identification of susceptibility and prognosis for any disease and to find out responders/non-responders for a specific treatment, thus leading the way towards personalized medicine. Several molecular techniques have provided swift, reliable and accurate ways for determining genotypes. The process of genotyping involves molecular techniques like isolation and quantification of genomic DNA, visualization of DNA on agarose/polyacrylamide gel using electrophoresis, polymerase chain reaction (PCR), restriction fragment length polymorphism (RFLP), random amplified polymorphic detection (RAPD) of genomic DNA, amplified fragment length polymorphism (AFLP), sequencing, allele-specific oligonucleotide (ASO) probes, microarrays etc. The present chapter will describe the protocols for different molecular techniques that are used to determine genotypes.
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