Question: 173. Following are the stages of cell division :
A. Gap 2 phase
B. Cytokinesis
C. Synthesis phase
D. Karyokinesis
E. Gap 1 phase
Choose the correct sequence of stages from the options given below :
(1) C-E-D-A-B
(2) E-B-D-A-C
(3) B-D-E-A-C
(4) E-C-A-D-B
Answer: Option (4)
Explanation:
The cell cycle consists of interphase followed by the mitotic phase.
Interphase includes three stages: Gap 1 phase, Synthesis phase, and Gap 2 phase.
During Gap 1 phase, the cell grows and prepares for DNA synthesis.
This is followed by the Synthesis phase, in which DNA replication occurs.
After DNA synthesis, the cell enters Gap 2 phase, where it prepares for mitosis.
The mitotic phase begins with karyokinesis, which is the division of the nucleus,
and is followed by cytokinesis, which is the division of the cytoplasm.
Therefore, the correct sequence is Gap 1 phase, Synthesis phase, Gap 2 phase, Karyokinesis,
and Cytokinesis, corresponding to E-C-A-D-B, which is Option (4).