NEET Solved Paper 2014 Question 52
Question: In S-phase of the cell cycle [AIPMT 2014]
Options:
A) amount of DNA doubles in each cell
B) amount of DNA remains same in each cell
C) chromosome number is increased
D) amount of DNA is reduced to half in each cell
Show Answer
Answer:
Correct Answer: A
Solution:
- S-phase is the synthesis phase in which the cell synthesis a replica of its gerome, i.e., DNA replication occurs by DNA polymerase. DNA replication along with the synthesis of histone proteins results in the duplication of chrombsomal material i.e., amount of DNA doubles in each cell. Amount of DNA remains unchanged during $ G _1 $ phase or post mitotic gap and/or $ G _2 $ phase or pre mitotic phase.
BETA
