SNV

SNV, or Single Nucleotide Variant, is a small change in the DNA sequence where one building block (nucleotide) has been altered. Think of DNA as a long instruction manual made up of four types of letters (A, T, C, G). An SNV is like swapping one letter for another in that manual. These tiny changes can influence how genes function, potentially affecting traits or health. They are common and can occur naturally or due to environmental factors, and studying SNVs helps scientists understand genetic diversity, disease risk, and how individuals respond to treatments.