Q. While analyzing the DNA of an organism, a total number of 5386 nucleotides were found out of which the proportion of different bases were: adenine = 29%, guanine = 17%, cytosine = 32%, thymine = 17%. Considering the Chargaff’s rule, it can be concluded that
A) it is a double stranded circular DNA
B) it is single stranded DNA
C) it is a double stranded linear DNA
D) no conclusion can be drawn
Explanation
In a double stranded DNA, the ratio between adenine and thymine and guanine and cytosine are constant and equal. The given ratios represent that the given DNA molecule is single stranded.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.