Which of the following does not occur during mitosis?

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

Expert Solution

Condensation of chromosomes occurs during the prophase stage of the mitotic phase. It is the initial stage of mitosis and is characterized by condensation of chromosomes and the joining of the sister chromatids at the centromeres. Separation of sister chromatids occurs during the anaphase stage of mitosis.

It is the shortest stage of mitosis and involves the two separated daughter chromosomes' movement towards the opposite poles of the cell. Spindle formation occurs in the cytoplasm during the prophase stage of mitosis. They consist of fibers that are made up of microtubules and their associated proteins.

Hence, the options (A), (C), and (D) are incorrect.

Replication of DNA (deoxyribonucleic acid) occurs during the S (synthesis) phase of the cell cycle's interphase. It occurs before the mitotic phase and involves duplication of the chromosomes within the nucleus.

Hence, the correct answer is an option (B).

Dr. OWL answered 3 years ago

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