Question

Following shows different phases of cell cycle and their functions. Which of the these is an incorrect match ?

Answer 1

The interphase (resting phase) is the time during which the cell is preparing for division by undergoing both cell growth and DNA replication in an orderly manner.

S or synthesis phase marks the period during which DNA synthesis or replication takes place. During this time the amount of DNA per cell doubles. If the initial amount of DNA is denoted as 2C then it increases to 4C. However, there is no increase in the chromosome number; if the cell had diploid or 2n number of chromosomes at $G_1$, even after S phase the number of chromosomes remains the same, i.e., 2n.

During the $G_2$ phase, proteins are synthesised in preparation for mitosis while cell growth continues.
$G_1$ phase corresponds to the interval between mitosis and initiation of DNA replication. During $G_1$ phase, cell organelles are doubled and the cell is metabolically active and continuously grows but does not replicate its DNA.

So, the correct answer is "option D"