Multiple choice

RNA is considered as the first genetic material to have evolved on the earth. Which one of the following properties of RNA is critical for its functioning as the genetic material in the absence of DNA and protein?

  1. The presence of uracil as a base in place of thymine

  2. The RNA is less stable than DNA; therefore RNA has higher probability to evolve as genetic material as compared to DNA

  3. The single stranded RNA has a genotype as well as phenotype

  4. RNA exists in 3 forms while DNA has only one form
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ribozymes and single-stranded RNA molecules can fold into complex three-dimensional structures that possess catalytic activity (phenotype) while simultaneously storing sequence information (genotype).

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