Page "Centriole" Paragraph 10

Cells in G < sub > 0 </ sub > and G < sub > 1 </ sub > usually contain two compiole.

During the cell division cycle, a new centriole grows from the side of each of the existing " mother " centrioles.

After centriole duplication, the two pairs of centrioles remain attached to each other in an orthogonal configuration until mitosis, when the mother and daughter centrioles separate in a manner dependent upon the enzyme separase.