NEET BIOLOGY

Detailed explanation-1: -The first and longest phase of mitosis is prophase. During prophase, chromatin condenses into chromosomes, and the nuclear envelope (the membrane surrounding the nucleus) breaks down. In animal cells, the centrioles near the nucleus begin to separate and move to opposite poles of the cell.

Detailed explanation-2: -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-3: -Without centrioles, chromosomes would not be able to move during the formation of new cells. Centrioles help to organize the assembly of microtubules during cell division. To put it simply, chromosomes use the centriole’s microtubules as a highway during the cell division process.

Detailed explanation-4: -Centrioles-Organizing Chromosomes They are put to work in both the process of mitosis and the process of meiosis. You will usually find them near the nucleus but they cannot be seen when the cell is not dividing.