Q.Certain stages in cell cycle are given below.
Karyokinesis, Prophase, Cytokinesis, Metaphase, Anaphase, Telophase.
Choose the statements (from those given below) that match with these stages and prepare a table.
• Centromere split and chromosomes move to opposite poles.
• Chromosomes cluster at opposite poles and nuclear envelope assembles around.
• Chromosomes seems to be with two chromatids attached at centromere.
• Chromosomes arranged at spindle equator.
• Separation of daughter chromosomes.
• Division of cytoplasm.

A useful way to picture the whole life of a dividing cell is as a repeating loop with two big chapters — a long chapter of preparation and a short, dramatic chapter of actual splitting. This loop is the cell cycle, and knowing its main stages tells you what the cell is doing at any given moment.

At the broadest level, the cell cycle is split into two fundamental phases:

• Interphase — the long period between two successive divisions, during which the cell grows and replicates its DNA in preparation. It takes up the great majority of the cycle (more than 95 per cent in a typical human cell).
• M phase (Mitosis phase) — the comparatively brief stage in which the actual cell division takes place. It begins with nuclear division (karyokinesis) and normally ends with division of the cytoplasm (cytokinesis).

Interphase is not a single block; it is itself made up of three sub-stages:

• G1 phase — growth and normal metabolism, before any DNA copying.
• S phase — DNA synthesis, when the genetic material is duplicated (the amount of DNA doubles, though the chromosome number stays the same). …