Question:

The stage during which, cell decides to get specialized

Updated On: Jun 18, 2022
  • $S$-phase
  • $M$-phase
  • $G_{1}$ -phase
  • $G_{2}$ -phase
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The Correct Option is C

Solution and Explanation

The cell cycle is the process by which cells reproduce themselves along with their genetic material, ie, nuclear DNA. The four phases of the cell cycle are $G_{1}, S , G_{2}$ and $M$.
[a] $G_{1}$-phase (first gap phase before DNA replication)?Cell gets decide to differentiate during $G_{1}$-phase. The differentiated cells that no longer divide are arrested usually in $G_{1}$ phase, such a type of phase is called $G_{0}$-phase, set on next phase as appropriate.
[b] $S$-phase (synthesis phase)?DNA replication occurs. Protein molecules called histones are synthesized and cover each DNA strand. Each chromosome divides into two chromatids. At this stage the cell is $4 n$.
[c] $G_{2}$-phase (second gap phase before mitosis) ? intensive cellular synthesis mitochondria and chloroplasts divide, energy store increase, mitotic begin to form. [d] $M$-phase (mitotic phase)? nuclear division in four stages and cytoplasmic division.
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Concepts Used:

Cell Cycle

The sequence of growth and division of a cell, and consists of a series of biological processes, particularly the resting phase (G0), the interphase (G1, S, G2), and cell division (i.e. mitosis and cytokinesis)