Question

Which of the following occurs during mitosis?
A. The cell membrane pinches one cell into two.
B. The chromosomes of the parent cells are copied.
C. The parent cells take in nutrients and doubles in size.
D. The nucleus of the parent cell divides into two nuclei.

Answer 1

Answer:

2 ones

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Answer 2

During the process of mitosis, the chromosomes of parent cells are copied in order to create two daughter nuclei. Therefore, the answer is (B) The chromosomes of the parent cells are copied.

Explanation-

• First stage of the mitosis process is called prophase and it occurs after the conclusion of the interphase process.
• The chromosomes of parent cell gets duplicated during the s-phase.
• They get condensed and become compact to thousand times and more during the interphase.
• Two identical sister chromatids are the parts of duplicated chromosomes and are joined at the centromere.
• They look like x-shaped micro-bodies.
• The condensation process gets catalysed by the proteins attachment to several DNAs.
• Cohesion forms ring shaped structures that hold sister chromatids and Condensin forms the rings which coils around the chromosomes into a very compact forms.