NTA Abhyas NEET2020BotanyCell Cycle and Cell DivisionPractice
A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has:
Options
- ATwice the number of chromosomes and twice the amount of DNA
- BSame number of chromosomes but twice the amount of DNA
- CTwice the number of chromosomes and four times the amount of DNA
- DFour times the number of chromosomes and twice the amount of DNA
Correct answer
C. Twice the number of chromosomes and four times the amount of DNA
Step-by-step solution
S-phase (synthesis phase) is the part of the cell cycle in which DNA is replicated, but a number of chromosome does not change. If a cell is diploid then after S phase DNA content in the cell will be 4 C and Chromosome in the cell will be 2 N. While in a gamete, DNA content in gamete = C Chromosome in gamete = N Hence, the Number of chromosome in a somatic cell will be twice than gamete while DNA content will be four times.