Label the diagram and also determine the stage at which this structure is visible.

State the role of centrioles other than spindle formation.

Mitochondria and plastids have their own DNA (genetic material). What is known about their fate during nuclear division like mitosis?

A cell has 32 chromosomes. It undergoes mitotic division. What will be the chromosome number (N) during metaphase? What would be the DNA content (C) during anaphase?

While examining the mitotic stage in a tissue, one finds some cells with 16 chromosomes and some with 32 chromosomes. What possible reasons could you assign to this difference in chromosome number. Do you think cells with 16 chromosomes could have arisen from cells with 32 chromosomes or vice versa?