7
Question
If a double stranded DNA has 30 percent of cytosine, what is the percentage of adenine in DNA?
If a double stranded DNA has 30 percent of cytosine, what is the percentage of adenine in DNA?
30%
20%
15%
40%
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Solution
The correct option is B 20%
In the given data, percent of cytosine = 30%
As per base pair rule A=T & C=G,
So, Guanine = 30%
The percent of Thymine + Adenine will be 100-(30+30) = 40
Therefore, the percent of Adenine will be 40/2 = 20%
In the given data, percent of cytosine = 30%
As per base pair rule A=T & C=G,
So, Guanine = 30%
The percent of Thymine + Adenine will be 100-(30+30) = 40
Therefore, the percent of Adenine will be 40/2 = 20%
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