NEET BIOLOGY

Detailed explanation-1: -In pairs, centrioles form the heart of the centrosome, which hovers near the nucleus and coordinates chromosome division during mitosis.

Detailed explanation-2: -When a cell is born, it contains two mature centrioles. Concurrent with DNA replication, the centrioles also begin to duplicate, with each centriole giving rise to a new daughter that forms at a right angle to the outer wall of its mother (Figure 1B).

Detailed explanation-3: -Centriole helps in cell division They are put to work in both the process of mitosis and the process of meiosis. Before DNA replication, cells contain two centrioles. The older of the two centrioles is termed the mother centriole, the other the daughter.

Detailed explanation-4: -Centrioles are responsible for organizing the spindle fibers in the mitotic spindle apparatus and are thought to participate in the completion of cytokinesis during the process of cell division.

Detailed explanation-5: -In most somatic cells, centriole duplication occurs during S phase and is marked by the formation of procentrioles at the proximal end of each parental centriole.