<prompt> Mitochondria gene True statementa Paternal transmissionb Maternal transmissionc Mendelian inheritanced Mitochondrial myopathycbdabac  <response>: Mitochondrial DNA is always maternally inherited.Important mitochondrial diseases are mitochondrial encephalomyopathy with lactic acidosis and stroke-like episodes MELAS, Leber hereditary optic neuropathy, myoclonic epilepsy with ragged-red fibers, Leigh syndrome, Pearson syndrome, keams-sajre syndrome, chronic progressive external ophthalmoplegia and NARP neurogenic weakness with ataxia retinitis pigmentosa. 