NEET 2021
- Exam
- NEET
- Year
- 2021
- Subject
- Botany
- Chapter
- Cell Cycle and Cell Division
NEET 2021 · Botany · Cell Cycle and Cell Division
The fruit fly has 8 chromosomes ( 2n ) in each cell. During the...
The fruit fly has chromosomes in each cell. During the interphase of mitosis if the number of chromosomes at phase is What would be the number of chromosomes after the S phase?
Options
- A
- B
- C
- D
Correct answer
A.
Step-by-step solution
The number of chromosomes remains the same after S-phase, but the amount of DNA becomes double.
S phase is the phase of the cell cycle in which DNA is replicated, occurring between the G1 phase and G2 phase. Since accurate duplication of the genome is critical to successful cell division, the processes that occur during S-phase are tightly regulated and widely conserved.