Chloroplasts contain circular DNA like that in cyanobacteria and are interpreted as representing reduced endosymbiotic cyanobacteria.
klˈoːɹoʊplˌæsts kəntˈeɪn sˈɜːkjʊlɚ dˌiːˌɛnˈeɪ lˈaɪk ðæt ɪn sˌaɪɐnˌɑːbɐktˈɪɹiə ænd ɑːɹ ɪntˈɜːpɹɪɾᵻd æz ɹˌɛpɹᵻzˈɛntɪŋ ɹᵻdˈuːst ˌɛndoʊsˌɪmbaɪˈɑːɾɪk sˌaɪɐnˌɑːbɐktˈɪɹiə.