Question

The characteristic of this stage of mitosis is the separation of sister chromatids
A. Telophase
B. Metaphase
C. Prometaphase
D. Anaphase

Answer 1

Hint:
A cell cycle is a sequential event of duplication of the cell genome, synthesis of other constituents of the cell, and eventually division into two daughter cells. It consists of two basic phases interphase and M (mitosis phase).

Complete answer:
The M phase has two parts: karyokinesis (a division of the nucleus) and cytokinesis (a division of the cytoplasm). It is called the equational division as the number of chromosomes remains the same as the parent cell. It is divided into four stages prophase, metaphase, anaphase, and telophase.
Prophase: It is the first stage of mitosis during which the condensation of chromosomes is initiated. The nuclear membrane disintegrates and cell organelles like the Golgi complex and nucleolus disappear.
Prometaphase: It is a stage preceding metaphase during which the nuclear envelope that encloses the nucleus breaks down.
Metaphase: It is the second stage of mitosis where the spindle fiber microtubules attach to the kinetochores (small disc-shaped structures at the surface of the centromeres) of chromosomes. The chromosomes align themselves at the metaphase plate at the center of the cell.
Anaphase: It is the third stage of mitosis which is characterized by the splitting of centromere and separation of sister chromatids that start moving towards the opposite poles.
Telophase: The chromosomes have reached the opposite poles and the chromosomes are now seen as a cluster and have lost their individuality. The nucleus envelope is developed and the nucleolus, Golgi complex, and endoplasmic reticulum reform.
Thus, the correct answer is:- Anaphase.

Option ‘D’ is correct

Note:
Mitosis helps in cell repair and it also helps in restoring the nucleo-cytoplasmic ratio by dividing.