Duplication of centrioles is observed during

Question

Duplication of centrioles is observed during (A) S-Phase (B) G2 Phase (C) G1 Phase (D) both (B) and (C)

Tardigrade Admin · Accepted Answer

The cell cycle is divided into two phases - Interphase and Mitosis phase or the M phase. Interphase is further divide into 3 phases - the Gap 1 or G1 phase, the Synthesis phase or S phase and the Gap 2 or G2 phase. G1 phase is the interval between mitosis and initiation of DNA replication during which the cell is metabolically active and grows but does not replicate. During the S or synthesis phase DNA synthesis and replication occurs. The amount of DNA in the cell doubles during this phase but the number of chromosomes remain same. The centrioles also duplicate in the cytoplasm during S phase. In the G2 phase, proteins are synthesised in preparation for mitosis while cell growth continues.

Q. Duplication of centrioles is observed during

S-Phase

$G_{2}$ Phase

$G_{1}$ Phase

both $(B)$ and $(C)$

Q. Duplication of centrioles is observed during

S-Phase

G2​ Phase

G1​ Phase

both (B) and (C)

$G_{2}$ Phase

$G_{1}$ Phase

both $(B)$ and $(C)$