Choose the correct answer from each of the four options given below:
Synthesis phase in the cell cycle is called so, because of the synthesis of more:
Topic: S phase of the cell cycle
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Answer
(c) DNA.
The S (SYNTHESIS) phase of interphase is when DNA is REPLICATED. Each chromosome is copied, so that it then consists of two identical chromatids joined at the centromere.
The name itself is the clue: the phase is called SYNTHESIS phase precisely because of DNA synthesis.
The three stages of interphase: G1 — the cell grows; RNA and PROTEINS are made (which is option (b), the trap) S — DNA is REPLICATED G2 — further growth and preparation for division
WHY IT MUST HAPPEN FIRST: mitosis separates the two chromatids into two daughter cells. Unless the DNA has already been copied there would be nothing to separate, and each daughter would receive only half the genetic material.
DNA.