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Question

Given above is a schematic break-up of the phases/stages of cell cycle. Which one of the following is the correct indication of the stage/phase in the cell cycle?

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A
B - Metaphase
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B
C - Karyokinesis
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C
D - Synthetic phase
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D
A - Cytokinesis
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Solution

The correct option is C D - Synthetic phase
  • The cell cycle is comprised of a long interphase and a short division phase. The long interphase comprises of G1 or first growth phase, S or synthetic phase, and G2 or second growth phase.
  • Anaphase (represented by B) is the third phase of karyokinesis during mitosis.
  • The process by which the nucleus of the parent cell divides into two daughter nuclei is known as karyokinesis (represented by A).
  • The process by which the cytoplasm of the parent cell, divides into two daughter cells is cytokinesis and is represented by C in the question.
  • In S phase, DNA of each chromosome replicates followed by the synthesis of histones. The phase marked D corresponds to the S phase of a typical cell cycle.

So, the correct answer is option C.

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