Question

A cell with 54 chromosomes, will have 108 chromosomes during which of the following stage?
I. Anaphase
II. Metaphase
III. Prophase
IV. Telophase
A. I and IV
B. II and III
C. II and IV
D. I, II, and III

Answer 1

Hint: Chromosomes consist of a part of DNA or all of the genetic material of an organism. Replication of chromosomes takes place through a process called mitosis. Mitosis is a part of the cell cycle. A series of events that occurs in a cell to cause the division of two daughter cells is called the cell cycle.

Complete answer: Cell cycle is also called cell division. The cell has to undergo a series of events in order to divide and cell and produce two identical daughter cells. Mitosis is a type of cell division which involves replication and separation of the nuclei to produce two identical daughter cells. The series of events that are involved in the process of mitosis are prophase, prometaphase, metaphase, anaphase, and telophase. The preparatory phases of cell cycle involve thickening of the chromosomes. During metaphase, the chromosomes are lined in the centre of the cell that is to be divided. Chromosomes are divided from the centromere in the anaphase. This gives rise to an equal number of chromosomes which tends to move to the ends of the cell. By the time of telophase, the chromosomes are reached to the ends or poles of the cell and are ready for nucleoplasm division. Therefore, a cell with 54 chromosomes, will have 108 chromosomes during anaphase and telophase.
So, option A is the correct answer.

Note: The structure of chromosomes is complex and plays a vital role in transcriptional regulation. Depending on the organism the cell division may or may not occur during telophase. Cytokinesis is an event of cell cycle which occurs after mitosis that plays an important role in completing cell division.