Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Molecular Basis of Inheritance

Question:
Why DNA is better genetic material than RNA ?
Options:
DNA is chemically less reactive and structurally more stable than RNA .
RNA can directly code for proteins .
DNA has evolved from RNA .
All of these .
Correct Answer:
DNA is chemically less reactive and structurally more stable than RNA .
Explanation:
DNA chemically is less reactive and structurally more stable when compared to RNA. Therefore, among the two nucleic acids, the DNA is a better genetic material. In fact, the presence of thymine at the place of uracil also confers additional stability to DNA.