JIPMER 2019
- Exam
- JIPMER
- Year
- 2019
- Subject
- Botany
- Chapter
- Cell Cycle and Cell Division
JIPMER 2019 · Botany · Cell Cycle and Cell Division
What will be the DNA content and number of chromosomes in a cell of...
What will be the DNA content and number of chromosomes in a cell of after S-phase compared to the gamete of the same organism?
Options
- ASame DNA content but double chromosome number
- BFour times DNA content but double chromosome number
- CSame DNA content but half chromosome number
- DHalf DNA content but double chromosome number
Correct answer
B. Four times DNA content but double chromosome number
Step-by-step solution
The DNA content will be four times and the chromosomes will be double in number in a cell after S - phase as compared to the gamete of the same organism.
Gametes are haploid(n) cells that contain one set of chromosomes and half amount of DNA content in it.
During S- phase of cell division, only the DNA content of cell gets doubled from 2 n to 4 n while number of chromosome remain same in the dividing cell.