Question

Which of the following does not occur during mitosis?

a. condensation of the chromosomes
b. replication of the DNA
c. separation of sister chromatids
d. spindle formation

Answer 1

Replication of the DNA does not occur during mitosis.

Step-by-step explanation:

The correct answer is b. replication of the DNA. DNA replication occurs during interphase, which is the phase before mitosis. During mitosis, the DNA has already been replicated and is condensed into visible chromosomes. The other events listed in the options all occur during mitosis: condensation of the chromosomes, separation of sister chromatids, and spindle formation.

Answer 2

Option (b).

Step-by-step explanation:

Mitosis may be defined as the process of cell division in which a single parent cell divides into two cells. This division is known as reduction division because the chromosome number remains the same.

The chromosome condensation, spindle formation and sister chromatid separation occurs in mitosis. The replication of DNA occurs in the synthesis phase of cell cycle not during the process of mitosis.

Thus, the correct answer is option (b).