Chemical analysis showed that i-RNA contains 30% adenine, 15% guanine, 20% uracil.
| February 17, 2021 | education
Chemical analysis showed that i-RNA contains 30% adenine, 15% guanine, 20% uracil. What is the nucleic acid composition of the corresponding DNA region?
The number of adenyl nitrogenous bases in messenger RNA is equal to the number of thymine bases in DNA, the number of guanine bases is equal to the number of cytosine bases, the number of uracil bases is equal to the number of adenyl bases.
Let’s calculate the amount of cytosine in mRNA: 100% – (30% + 15% + 20%) = 35%
According to the principle of complementarity, the DNA will be: 35% guanine, 30% thymine, 15% cytosine, 20% adenine.
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