NEET Botany Molecular Basis of Inheritance Questions Solved


If the total amount of adenine and thymine in a double-stranded DNA is 45%, the amount of guanine in this DNA will be

(1) 22.5%

(2) 27.5%

(3) 45%

(4) 55%

(2) In a DNA segment amount of adenine is equal to thymine. According to given information adenine and thymine constitutes 45% of DNA. So, guanine and cytosine will constitute 55%. Amount of guanine is equal to cytosine so amount of guanine in DNA will be 55/2 = 27.5%.

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