Question

describe all phases of mitosis step by step and briefly explain what is happening at each step.

Answer 1

Phases of mitosis:

1. Prophase

• Condensation of chromosome
• Movement of centrosome
• Formation of mitotic spindle
• Begning of nucleoli break down

2. Metaphase

• Chromosome line up at metaphase plate
• Chromosome are attached to centrosome by mitotic spindle

3. Anaphase

• Sister chromatids seperate
• Sister chromayids move to opposite poles

4. Telophase

• Sister chromatids reach opposite pole
• Nuclear envelop forms
• Chromosome unfolds back to chromatin
• Nucleoli reappear

Tophase is then followed by cytokinesis, which is the division of cytoplasm. After cytokinesis two daughter cells separate. Absence or failure of cytokinesis lead to multinucleated condition.