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If a double stranded DNA has 20% of cyto...

If a double stranded DNA has 20% of cytosines, calculate the percent of adenine in the DNA.

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Cytosine 20% thus guanine will be 20%. Out of remaining 60%, 30% will be adenine and 30% will be thymine.
(Hint: A=T and G=C. If C is 20% then G comes equal to 20%. Thus G + C = 40%. A +T will come equal to 100 - 40 = 60%. As A = T, due to this A will be 30%.)
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