Question

3- Describe the characteristics of a cell in each one of the following different phases of the cell cycle including cytokinesis:

a. interphase__________

b.prophase______________

c.metaphase___________________

d.telophase____________________

e.cytokinesis__________________________

Answer 1

Interphase - In this phase the cell spends most of it's time. In interphase the cell grows in size, organelles are doubled , DNA content is doubled , protein synthesis takes place.

Prophase - Chromatin starts condensing into chromosomes, nuclear envelope breaks down , nucleoli disappear, in animal cells centrioles starts moving towards the pole and spindle fibre starts forming

Metaphase - Chromosomes starts aligning at the metaphase plate. The sister chromatids of each chromosome gets captured by microtubules via kinetochore from opposite poles and the chromosomes are ready to divide

Telophase- It is the last stage of cell division which gets imitated when the sperated chromosomes reach at opposite poles. Then telophase is marked by reformation of nuclear envelope around the seperated chromosomes, nucleoli reappears and the chromosomes starts decondensing back into Chromatins.

Cytokinesis- As the name suggests it is the process in which cytolplasm division takes place and the two new daughter cells are produced. Actin filaments make the contractile ring in animal cell which drives the force for cytokinesis to happen.