SNPs

SNPs, or single nucleotide polymorphisms, are small genetic variations where a single DNA building block (nucleotide) differs between individuals. These tiny differences can influence traits like eye color or disease risk. Think of the genome as a huge instruction manual; SNPs are like single-letter typos that can change how instructions are read. While many SNPs have no effect, some can impact health, how we respond to medications, or our physical features. They are common and help explain why people are unique at a biological level.