Question:
The Phase in which two identical copies of DNA are formed is:
The Phase in which two identical copies of DNA are formed is:
Updated On: Jul 14, 2026
- M phase
- G2 phase
- G1 phase
- S phase
Show Solution
Verified By Collegedunia
The Correct Option is D
Approach Solution - 1
The correct option is (D): S phase.
Was this answer helpful?
0
0
Show Solution
Verified By Collegedunia
Approach Solution -2
The question asks which phase of the cell cycle is when two identical copies of DNA are formed. Let's check each phase listed.
- M phase: This is the mitosis phase, where the cell physically divides and the already-duplicated chromosomes are separated into two daughter cells. DNA copying has already happened before this phase begins.
- G2 phase: This is the gap phase that comes after DNA replication and before mitosis. The cell checks for errors and prepares for division here, but no new DNA copying happens in this phase.
- G1 phase: This is the gap phase before DNA replication, when the cell grows and produces proteins and organelles needed for the upcoming replication. DNA is still present as a single copy at this stage.
- S phase: This stands for the synthesis phase, and it is the specific part of the cell cycle where the entire genome is replicated, producing two identical sister chromatids from each original chromosome. This is exactly when two identical copies of DNA are formed.
Only during the S phase does the cell actually duplicate its DNA; the other phases either come before replication, in G1, or after it, in G2 and M.
Therefore, the correct answer is S phase.
Was this answer helpful?
0
0
Top GPAT Biotechnology Questions
Viable cells (viability assay) are assayed by all of the following methods except
- Which one of the following is not a gene insertion technique into a eukaryotic cell
- The total number of amino acids in human insulin (total number of amino acids in A and B chain) is
- Pyrogens present in containers can be destroyed by heating the containers at:
- Which of the following Microorganism is used for the effective synthesis of interferon?
View More Questions
Top GPAT DNA repair Questions
- Silicone based adhesive used in TDDS possess following properties:
- When considering drug delivery to the brain which of the following is false?is short
- What are the three basic steps of conventional PCR
- Which are those therapeutic systems, which liberate the active ingredient through a special hole, prepared by laser
- DNA replication occurs in which phase of the cell cycle?
View More Questions
Top GPAT Questions
- Match the symbols in the List I with the terms used in the List II of conductance measurements, and
List I
SymbolsList II
TermsA \(\Omega^{-1}\) I Specific conductance B \(∧\) II Electrical conductance C k III Specific resistance D \(\rho\) IV Equivalent conductance
Choose the correct answer from the options given below: - Cottrell’s method is used for the measurement of:
- Match the statements in List I with their correct answers in List II, respectively, in respect to modified 1st law of thermodynamics, and
List I
List II
A Constant heat (q = 0) I Isothermal B Reversible process at constant temperature (dT = 0) II Isometric C Constant volume (dV = 0) III Adiabatic D Constant pressure (dP = 0) IV Isobar
Choose the correct answer from the options given below: - Boric acid with molecular weight 61.83 was partitioned between water and amyl alcohol at 25 °C. The amount of boric acid was determined to be 0.24 g in 250 ml of amyl alcohol and 0.32 g in 100 ml water. The partition coefficient of boric acid between water and amyl alcohol, when calculated at molar concentration for each of the solution, is:
- Drugs ‘A’, ‘B’ and ‘C’ follow zero order, first order and second order degradation kinetics, respectively, but have the same rate constant. Which of the following statement is true in this respect:
View More Questions