Practice question

Kinetoplast refers to conspicuous electron-dense structure located within single giant mitochondrion positioned near basal body in kinetoplastid protists, representing massive network of concatenated circular DNA molecules comprising dozens of maxicircles encoding respiratory proteins and thousands of minicircles encoding guide RNAs directing uridine insertion-deletion editing. Replicated synchronously with cell division via tripartite attachment complex linking kDNA to flagellum. Phylogenetically distinctive to Kinetoplastea including Trypanosoma and Leishmania, kinetoplast organization differs from conventional punctate nucleoids, providing diagnostic trait and target for antitrypanosomal drugs interfering with mitochondrial replication.