Amount of non-nuclear DNA present in a cell

A. $${\frac{1}{4}^{{\text{th}}}}$$ of nuclear DNA

B. $${\frac{1}{3}^{{\text{rd}}}}$$ of nuclear DNA

C. $${\frac{1}{2}^{{\text{nd}}}}$$ of nuclear DNA

D. None of the above

Answer: Option B

Solution(By Examveda Team)

Non-nuclear DNA is the extrachromosomal DNA present in mitochondria or chloroplast of some cell, i.e. any DNA that is found off the chromosomes.
Most of the DNA in an individual genome is found in chromosomes contained in the nucleus, but the amount of non-nuclear DNA present in a cell is around $${\frac{1}{3}^{{\text{rd}}}}$$ of the nuclear DNA.