THE MOLECULAR BASIS OF INHERITANCE
STRUCTURE OF NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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mRNA
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DNA
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tRNA
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rRNA
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Detailed explanation-1: -The nucleus is known to contain two types of nucleic acid, deoxyribonucleic acid and ribonucleic acid.
Detailed explanation-2: -While the nitrogenous bases adenine, guanine, and cytosine are identified in both DNA and RNA, thymine is found only in DNA, and uracil is found only in RNA [24]. The nucleic acids are large; for instance, the human 18 ribosomal RNA (rRNA) has a molecular weight of 6.4 × 105 Da and contains 1868 nucleotides.
Detailed explanation-3: -Complete answer: The nitrogen base found only in DNA is known as thymine which is also called 5-methyl uracil as thymine is a derivative of uracil. Both thymine and uracil are pyrimidines and thus are made up of one cyclic nitrogenous ring whereas purines are made up of two cyclic nitrogenous rings.