Genomic Variants (SNPs)
Learn about Single Nucleotide Polymorphisms, the foundational unit of human genetic variation and personal genomics.
Biological Mechanism & Scientific Context
A Single Nucleotide Polymorphism (SNP) represents a single base-pair substitution at a specific chromosomal locus occurring in at least 1% of the population. Over 4 million common SNPs exist across the human genome, shaping subtle biochemical variations rather than deterministic traits.