S phase (Synthesis Phase) is the phase of the cell cycle in which DNA is replicated, occurring between G1 phase and G2 phase. To produce two similar daughter cells, the complete DNA instructions in the cell must be duplicated. DNA replication occurs during this S (synthesis) phase.

A. G1 Phase B. G2 Phase C. G3 Phase D. Synthesis Phase. A1: The correct option is C, which is the G3 Phase. This is because there is no such stage as the G3 phase. Furthermore, the other three options are certainly the stages or phases of the Interphase. Download the Toppr – Best Learning App for Android and iOS or signup for free.

A. S phase is a phase in which synthesis or replication of DNA takes place. B. G1 phase is the interval between mitosis and initiation of DNA replication. In this, the cell does not synthesize or replicate DNA but remains metabolically active.

In a mammalian cell, the S phase typically lasts for about 8 hours. In simpler eukaryotic cells such as yeasts, the S phase can be as short as 40 minutes. By its end, each chromosome has been replicated to produce two complete copies, which remain joined together at their centromeres until the M phase (mitosis), which soon follows.

DNA duplication is important as it maintains the chromosome number in the daughter cells and hence mitosis is an equational division. Therefore, the duplication of DNA is an essential step and without it, no mitosis can take place. Mitotic cell division cannot take …

S-Phase or the synthesis phase is the second phase of Interphase during cell division. It is recognized by the process of DNA duplication in which the DNA synthesis takes place in this phase. At this time of DNA synthesis, the genetic material of an organism gets doubled which means that the 2N complement of DNA is converted into a 4N complement.

During the G 2 phase, the DNA content remains double the initial content as the cell enters the M phase. This is because the G 2 phase occurs just after the S phase and the cell prepares for division during this phase. The chromosome number still remains the same.

During G1- phase, cells grow and synthesize the 20 amino acids needed to manufacture proteins later on. B. Cell cycle begins with the resting phase. During this phase, cells are at ''rest''.

There are 4 phases of the cell cycle, namely G 1 phase, S phase, G 2 phase and M phase. During G 1 phase or gap 1 phase, the cell increases in size. Also, various proteins are synthesized in this phase. During S phase or synthesis phase, the DNA replication takes place. During G 2 phase, cell continues to grow until it enters the M phase or ...

Although, there will be no increment in chromosome number: for e.g. if a cell has the 2n number of chromosomes at G 1, even after S phase the number of chromosomes remains the same, i.e., 2n. before the cell enters into the S-phase, it has the DNA in the form of chromatin not chromosome. Chromosomes are formed when the DNA is replicated during ...