Before revision: mtDNA naming convention Mitochondrial DNA (mtDNA) haplogroups are defined by the presence of a series of single-nucleotide polymorphism (SNP) markers in the hypervariable regions and the coding region of mitochondrial DNA.
After revision: mtDNA naming convention Human mitochondrial DNA (mtDNA) haplogroups are defined by the presence of a series of single-nucleotide polymorphism (SNP) markers in the hypervariable regions and the coding region of mitochondrial DNA.