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2025-02-18T04:08:23Z

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	{{Genetics-stub}}		{{Genetics-stub}}
			<gallery>
			File:dna-SNP.svg\|Single-nucleotide polymorphism
			File:Types_of_SNP_new1.png\|Types of SNP
			File:Associations_between_SNPs,_methylation_patterns_and_gene_expression.png\|Associations between SNPs, methylation patterns, and gene expression
			</gallery>

Prab: CSV import

2024-03-22T01:43:29Z

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'''Single-nucleotide polymorphism''' ('''SNP'''; pronounced "snip") is a variation in a single nucleotide that occurs at a specific position in the genome. SNPs are the most common type of [[genetic variation]] among people. Each SNP represents a difference in a single [[DNA]] building block, called a nucleotide. For example, a SNP may replace the nucleotide cytosine (C) with the nucleotide thymine (T) in a certain stretch of DNA. SNPs can occur within [[coding regions]] of genes, non-coding regions of genes, or in the intergenic regions between genes. Depending on where they occur, SNPs can have a wide range of effects on gene function and health.

==Types of SNPs==
There are several types of SNPs, including:
* '''Synonymous SNPs''': These do not change the [[protein]] sequence that the gene produces.
* '''Non-synonymous SNPs''': These change the amino acid sequence of a protein and can affect the protein's function.
* '''Insertion/deletion SNPs''': These involve the insertion or deletion of nucleotides in the genome.
* '''Regulatory SNPs''': These occur in gene regulatory regions and can affect gene expression.

==Importance of SNPs==
SNPs are important for several reasons:
* '''Genetic Diversity''': They contribute to the genetic diversity among individuals, which can influence a wide range of physical traits and susceptibility to diseases.
* '''Disease Research''': SNPs are used in [[genetic association studies]] to identify genes that may contribute to common diseases.
* '''Pharmacogenomics''': SNPs can influence how individuals respond to drugs, which is the basis of [[pharmacogenomics]].
* '''Forensic Science''': SNPs can be used in forensic testing to help identify individuals.

==Detecting SNPs==
SNPs can be detected using various [[molecular biology]] techniques, including:
* [[DNA sequencing]]
* [[Polymerase chain reaction]] (PCR)
* [[Microarrays]]

==Applications of SNP Information==
The information gained from studying SNPs has a wide range of applications, including:
* Understanding the genetic basis of diseases
* Developing new drugs and treatments
* Personalized medicine, where treatments are tailored to an individual's genetic makeup
* Improving crop varieties in agriculture

==Challenges and Considerations==
While SNPs offer great potential for advancing medical and biological research, there are challenges and considerations, including:
* The need for large-scale studies to accurately identify SNP-disease associations
* Ethical considerations in genetic testing and privacy
* The potential for genetic discrimination based on SNP information

==See Also==
* [[Genome-wide association study]]
* [[Genomics]]
* [[Human genome]]
* [[Molecular genetics]]

[[Category:Genetics]]
[[Category:Molecular biology]]
[[Category:Bioinformatics]]

{{Genetics-stub}}

Single-nucleotide polymorphism - Revision history

Prab: CSV import

Prab: CSV import