Question

Which among the following is the longest phase of the cell cycle?
(a)Prophase
(b)Telophase
(c)$G_1$
(d)$G_2$

Answer 1

Hint: The first phase of the cell cycle which occurs in the eukaryotic organisms that result in the synthesis of the mRNA and proteins. After this stage preparation of DNA replication starts for the next stage.

Complete answer:
${ G }_{ 1 }$ is also known as the Gap 1 phase. It is the first stage occurring in the cell cycle. In this stage, the preparation of the cell cycle occurs which checks whether the cells are ready to divide yet.

Additional Information: -The cell cycle is so known as the cell division, where one of the cells divides to form two daughter cells.
-The cell cycle has two important phases: interphase, and mitotic (M) phase.
-The eukaryotic interphase four main phases, ${ G }_{ 1 }$, A phase, ${ G }_{ 2 }$, and mitotic phase.
-All three phases ${ G }_{ 1 }$, A phase, and ${ G }_{ 2 }$ together constitute interphase.
-${ G }_{ 1 }$ helps in the synthesis of the mRNA and proteins resulting in the meiosis.
-This phase is responsible for checking the preparation of the cell to undergo cell cycle.
-The cell after this phase will enter A phase where the DNA is replicated.

So, the correct answer is, “${ G }_{ 1 }$.”

Note: The ${ G }_{ 2 }$ is responsible for checking the preparation of the cell before entering the mitotic phase. It is known as the growth phase. The mitotic phase is the division of the cell into two daughter cells. It is also known as the chromosome separation phase. The cell cycle was first described by Howard and Pelc.