MCQ practice · SSC Biology Board questions · Chapter 12: Heredity in Organisms and Biological Evolution
Where is uracil found?
Think it through first, then pick an option.
- a Gene
- b DNA
- c RNA
- d Locus
Answer and explanation
Correct answer: c RNA
Uracil is found only in RNA.
Why the other options are wrong
- a Gene: A gene is a part of DNA, and DNA has no uracil.
- b DNA: Uracil is not in DNA; DNA has thymine instead.
- d Locus: Locus is the position of a gene on the chromosome; it is not a molecule with bases.
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