Question

if a double stranded DNA has 20 percent of cytosine calculate percent of adenine​

Answer 1

Answer:

if a double-stranded DNA has 20% cytosine, it has 20% guanine. Thus, C + G makes 40% of the total bases. The remaining 60% includes both adenine and thymine which are in equal amounts. So, the percentage of adenine is 30%

Answer 2

Explanation:

According to Chargaff's rule, the amount of adenine is always equal to that of thymine and the amount of guanine is always equal to that of cytosine i.e. A = T and G = C.

If dsDNA has 20% of cytosine, then according to the law, it would have 20% of guanine. The remaining 60% represents both A + T molecule. Since adenine and guanine are always present in equal numbers, the percentage of adenine molecule is 30%.

So, the correct answer is '30%'.

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