Question

In a particular RNA molecule, if adenine is 13% of the total nitrogenous bases, what is the amount of guanine in that molecule of RNA?​

Answer 1

Answer:

The answer is option A i.e "32%".

According to Chargraff's rule, Number of purine (adenine+guanine) = Number of pyrimidine (cytosine+thymine).

Hence, the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.

As per the data given above, we can infer that, the percentage of G = the percentage of C = 18%.

Now, total percentage of total A and T = 100 - 18 - 18 = 64, so the percentage of A is 64/2 = 32%.