Question

Explain about the four stages of Karyokinesis.
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Answer 1

Explanation:

Mitosis can be categorized into two steps:

• KARYOKINESIS
• CYTOKINESIS

Karyokinesis can be categorized into four phases:

1. PROPHASE
2. METAPHASE
3. ANAPHASE
4. TELOPHASE

Prophase can be categorized into:

⟶ Early prophase

⟶ Late prophase

Early prophase:

• Centrosome splits into two daughter centrioles.
• Chromosomes are condensed from chromatin fibres.

Late prophase:

• Centrioles reach to opposite poles.
• Nuclear membrane and nucleolus disappear.
• Spindle fibres appear between the two daughter centrioles.

Metaphase:

• Chromosomes are arranged on the equatorial plane of the cell.

Anaphase can be categorized into:

⟶ Early anaphase

⟶ Late anaphase

Early anaphase:

• Sister chromatids are separated by splitting of centromere and started moving away from each other.

Late anaphase:

• Sister chromatids have reached opposite poles near the centrioles.

Telophase:

• It is the last phase of karyokinesis.
• Nuclear membrane and nucleolus disappear.
• Spindle fibres disappear.
• Chromosomes start decondensing to chromatin fibres.

Learn more:

KARYOKINESIS:

• It means division of nucleus/all the nuclear changes occurring during cell division in a cell.

CYTOKINESIS:

• It means division of cytoplasm after karyokinesis.

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Answer 2

Answer:

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