The 23andMe Personal Genome Service™ offers information about customers’ maternal and paternal ancestry by examining their mitochondrial DNA (which we all inherit from our mothers) and the Y chromosome (which is passed by fathers to their sons).
Over our species’ history new genetic variations have arisen spontaneously in those pieces of DNA, and been passed down [...]

Tags: 23andMe Labs, ancestry, Haplogroup Tree Mutation Mapper, maternal, paternal, Personal Genome Service