has part has part characteristic of inheres in has modifier mitochondrion Mode of inheritance Mitochondrial inheritance HP:0001458 HP:0001427 Mitochondrial UMLS:C0887941 A mode of inheritance that is observed for traits related to a gene encoded on the mitochondrial genome. Because the mitochondrial genome is essentially always maternally inherited, a mitochondrial condition can only be transmitted by females, although the condition can affect both sexes. The proportion of mutant mitochondria can vary (heteroplasmy). HP:0001431 mitochondrial HP:0001506 Mendelian inheritance abnormal