dbSNP (Database of Single Nucleotide Polymorphisms)

dbSNP (Database of Single Nucleotide Polymorphisms) is an online resource that catalogs genetic variations, specifically single nucleotide polymorphisms (SNPs), across different human populations and other species. SNPs are tiny changes in DNA where a single base (letter) differs between individuals. This database helps researchers understand how these variations may influence traits, health, and disease by providing a comprehensive, organized record of known genetic differences. It supports genetic studies, personalized medicine, and helps improve our understanding of human genetic diversity.