Incazelo yesichazamazwi ye-"monogenic" ithi: ihlobene noma inqunywa isakhi sofuzo esisodwa noma ipheya yofuzo. Igama livame ukusetshenziswa kumongo wezakhi zofuzo kanye nefa, libhekisela esicini noma isici esilawulwa isakhi sofuzo esisodwa.
