Question

All of the following statements are true of mitosis except

• A. Daughter cells are identical to parent cell
• B. DNA is replicated
• C. The cell divides twice
• D. Chromosomes move to opposite sides of the cell
• E. Two cells are formed

Answer 1

Answer: (C)

The cell divides twice

A. Mitosis is known as the equational division as at the end of mitosis, two daughter cells are formed which have ploidy number same as that of the parent cell i.e. they contain equal amount of DNA as the parent cell. So the daughter cells are identical to parent cell. Hence statement A is correct.

B. Mitosis consists of a resting phase and a diving phase. The resting phase is the interphase which is further subdivided into G1, S and G2 phase. In G1 phase cell continues to grow. In S phase, replication or synthesis of DNA occur. In G2 phase, cell prepares for genomic separation. Hence statement B is correct.

C. At the end of mitotic cycle, two daughter cells are formed i.e. cell divides one time to form two daughter cells. Hence statement C is incorrect.

D. The dividing phase of mitosis is subdivided into Prophase, Metaphase, Anaphase and Telophase. The chromatin gets condensed to form chromosomes in prophase which then align at the equatorial plate in the metaphase. The chromosomes then move to opposite poles of the cell in anaphase as they are pulled by spindle fibres. The cell then divides to form two daughter cells in telophase. Hence statement D is correct.

E. At the end of mitosis, two daughter cells are formed. Hence statement E is correct.

So, the correct answer is 'The cell divides twice'.