If the total amount of adenine and thymine in a double-stranded DNA is 60% the amount of guainine in this DNA will be
A
15%
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B
20%
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C
30%
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D
40%
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Solution
The correct option is C 20% If the amount of adenine+ thymine = 60%, then the amount of guanine + cytosine will be 40%. So, the amount of guanine in this DNA will be = 20%.