Which members of my family have the same mitochondrial haplotype?
Mitochondrial DNA (mtDNA) is maternally transmitted, so any relative whose relationship to you does not pass through a male will share the same mtDNA. For a man or woman, relatives with the same mtDNA include your mother, your brothers and sisters, your maternal grandmother, your maternal aunts and uncles, and your cousins on your maternal aunt’s side. If you are a woman, all your children and all your daughters’ children will have the same mtDNA. If you are a man, your mitochondrial DNA is derived from your mother (and her mother, etc) and is not passed on to your children.
