part of centriole replication The cell cycle process in which a daughter centriole is formed perpendicular to an existing centriole. An immature centriole contains a ninefold radially symmetric array of single microtubules; mature centrioles consist of a radial array of nine microtubule triplets, doublets, or singlets depending upon the species and cell type. Duplicated centrioles also become the ciliary basal body in cells that form cilia during G0. GO:0032054 centriole duplication GO:0007099 microtubule basal body duplication biological_process ciliary basal body duplication cell cycle process centrosome duplication centriole assembly