Question

c) Find the correct sequence in connection with division of nucleus..
i) Anaphase Telophase
Prophase
Metaphase
il) Prophase Metaphase
Anaphase Telophase
iii) Prophase Metaphase Telophase Anaphase​

Answer 1

The correct phase is il) Prophase Metaphase, Anaphase Telophase

• Mitosis is a nuclear division mechanism that occurs in eukaryotic cells when a parent cell divides into two identical daughter cells.
• It refers to the isolation of the duplicated genetic material carried in the nucleus during cell division.
• It follows a proper series of steps which are -

1. Prophase - Separates the duplicated hereditary matter carried in the core of a parent cell into two indistinguishable daughter cells
2. Metaphase - When chromosomes are scattered around the metaphase layer, a plane among two poles of the spindle, the mitosis process starts.
3. Anaphase - After chromosomes divide into individual chromatids, the process starts. Each pole has a complete chromosome group at the end, a similar count as the original cell.
4. Telophase - The nuclear division is completed when a nuclear envelope forms around each pole, containing two nuclei.

Answer 2

The correct sequence in MITOSIS is:

• PROPHASE, METAPHASE, ANAPHASE and TELOPHASE.

Detailed discussion:

• Mitosis is a method of cell division in which the daughter cells have the same number of chromosomes as that of the parent cells.

• Mitosis is mainly a part of the cell cycle, in fact , it is the shortest phase of the cell cycle.

Prophase:

• There is condensation of nuclear chromatin, and decision of disappearance of cell organelles and nuclear membrane.

Metaphase:

• It is the best phase to study chromosomal morphology.

• Chromosomes line up at the metaphase plate.

Anaphase:

• There is splitting of the centromeres with pulling of the sister chromatids towards the pole of the cell.

Telophase:

• Development of nuclear membrane around the set of sister chromosomes.

• This step is followed by another process known as cytokinesis which then divides the cytoplasm of the parent cell and produces two daughter cells.

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