Question

Make a flow chart to show the cell cycle and explain cell division describing different stages of mitosis.

Answer 1

Different stages of mitotic cell division:

Stage	Description
1) Prophase	Chromatin condenses to form chromosomes. Chrormisomes split length ways to form chromatids, connected by centromeres. Nuclear membrane breaks down.
2) Metaphase	Chromosomes move to spindle equator, centromeres attached to spindle fibres. Centromeres split, separating the chromatids.
3) Anaphase	Spindle fibres attached to centromeres contract, pulling chromatids towards poles.
4) Telophase	Chromatids elongate, become invisible. Nuclear membranes form round daughter nuclei. Nucleus divides into two and division of cytoplasm starts.
5) Cytokinesis	Cytoplasm divides to form two daughter cells.