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
- Bthe same 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
The S phase is interphase where synthesis or replication of DNA takes place. During this phase, the chromosome number remains unchanged while the DNA in each cell doubles. Diploid somatic cells will therefore have twice the number of chromosomes and four times the number of DNA (2n) after the S phase as compared to the gametes which are haploid in number (n).