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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Uracil
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DNA
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RNA
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Detailed explanation-1: -Nucleic Acids Nucleic acids are large biomolecules that play essential roles in all cells and viruses. A major function of nucleic acids involves the storage and expression of genomic information. Deoxyribonucleic acid, or DNA, encodes the information cells need to make proteins.
Detailed explanation-2: -Uracil (U) is one of the four nucleotide bases in RNA, with the other three being adenine (A), cytosine (C) and guanine (G). In RNA, uracil pairs with adenine. In a DNA molecule, the nucleotide thymine (T) is used in place of uracil.
Detailed explanation-3: -Answer and Explanation: RNA uses uracil instead of thymine because RNA is already short-lived (compared to DNA) and errors don’t lead to long-lasting damage. Most importantly, uracil is less stable than thymine thereby making it easier to break down, as it is essentially a demethylated version of thymine.
Detailed explanation-4: -Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are perhaps the most important molecules in cell biology, responsible for the storage and reading of genetic information that underpins all life.