Question

Which of the following is not a basis of difference between plasmid and chromosomal DNA?
a. Presence of histones
b. Nature of histone
c. Nature of nucleotide
d. Linear form of genetic material

• A. b and c only
• B. a and d only
• C. a, b and d only
• D. a, b, c and d

Answer 1

The correct option is A b and c only

• A plasmid DNA is double-stranded and circular, it is naked without the histones.
• Whereas, a chromosomal DNA can be single stranded or double stranded, coated with histone proteins.
• Therefore, they cannot be differentiated on the basis of nature of histones and nucleotides.