Question:
What will be the DNA content and number of chromosomes in a cell, after S phase as compared to the gamete of the same organisms?
What will be the DNA content and number of chromosomes in a cell, after S phase as compared to the gamete of the same organisms?
Updated On: Aug 15, 2022
- Same DNA content but double chromosome number
- Four times DNA content but double chromosome number
- Same DNA content but half chromosome number
- Half DNA content but double chromosome number
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The Correct Option is B
Solution and Explanation
During S phase, replication increases the DNA content of the cell from 2n to 4n, so cells in S have DNA contents ranging from 2n to 4n and the cell is still genetically diploid (2n chromosome number).
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Concepts Used:
Cell Cycle
The sequence of growth and division of a cell, and consists of a series of biological processes, particularly the resting phase (G0), the interphase (G1, S, G2), and cell division (i.e. mitosis and cytokinesis)