The Single Nucleotide Polymorphism database (dbSNP) is a public-domain archive for a broad collection of simple genetic polymorphisms.

2015年5月18日 · dbSNP is a public-domain archive for human single nucleotide variations, microsatellites, and small-scale insertions and deletions along with publication, population frequency, molecular consequence, and genomic and RefSeq mapping information for both common variations and clinical mutations.

2021年4月3日 · dbsnp是NCBI于1998年建立的主要存储单核苷酸多态性（SNP）的免费公共数据库。 该数据库包含多种模式生物。 虽然其名称为dbSNP，但该数据库实际上包括多种分子变异：

Step 1: Data uploading: Upload a file from your computer with a suitable format: You can also paste your SNP data here (with the same format):

单核苷酸多样性 (single nucleotide polymorphism，SNP),主要是指在基因组水平上由单个核苷酸的变异所引起的DNA序列多样性，其数量很多，多态性丰富。 从理论上来看每一个SNP 位点都可以有4 种不同的变异形式（替换（转换或颠换）、插入或缺失）,但实际上发生的只有两种，即转换和颠换,二者之比为2 :1。 SNP 在CG序列上出现最为频繁,而且多是C转换为T ,原因是CG中的C 常为甲基化的,自发地脱氨后即成为胸腺嘧啶。 一般而言,SNP 是指变异频率大于1 %的单核苷酸变 …

2025年3月18日 · RefSNP (rs) exceed 1.2 billion records We are pleased to announce the release of the Database of Single Nucleotide Polymorphisms (dbSNP) Build 157, which has approximately 1.2 billion Reference SNP (rs) records across the human genome. This build includes updated datasets from 1000Genomes, TOPMed, gnomAD, NCBI ALFA release 3, and other studies that now incorporate … Continue reading dbSNP ...

2020年5月26日 · SNP是一种二态的标记，由单个碱基的转换或颠换所引起，也可由碱基的插入或缺失所致。 SNP既可能在基因序列内，也可能在基因以外的非编码序列上。 SNP所表现的多态性只涉及到单个碱基的变异，这种变异可由单个碱基的转换 (transition)或颠换 (transversion)所引起，也可由碱基的插入或缺失所致。 但通常所说的SNP并不包括后两种情况。 理论上讲，SNP既可能是二等位多态性，也可能是3个或4个等位多态性，但实际上，后两者非常少见，几乎可以忽 …

Over the last 25 years, dbSNP has evolved into a reliable central public repository for genetic variation data. dbSNP is a community-accepted reference data set for genetic research, analysis pipelines, and for both open-source and commercial tools. It is also an essential part of genetic research and discovery.

LD tag SNP selection and visualization for single or multiple populations. Finalization of SNP list from various queries. Querying SNP function predictions and ethnic-specific allele frequencies. Visualization of SNP related information in the context of DNA sequence. Preparing DNA Sequence for PCR Primer Design considering SNP information.

* The Ranking reflects how much information openSNP has mined for this SNP. An entry in SNPedia is worth 5 points. A paper in the PLoS or on Genome.gov or an annotation by the Personal Genome Project are worth 2 points. A paper on Mendeley is worth 1 point.