Given below are two statements. [2023]
Statement I: RNA being unstable, mutate at a faster rate.
Statement II: RNA can directly code for synthesis of proteins hence can easily express the characters.
In the light of the above statements, choose the correct answer from the options given below.
Statement I is correct but statement II is false.
Statement I is incorrect but statement II is true.
Both statement I and statement II are true.
Both statement I and statement II are false.
Which one of the following is not applicable to RNA? [2015]
Heterocyclic nitrogenous bases
Chargaff’s rule
Complementary base pairing
5’ phosphoryl and 3’ hydroxyl ends
(2)
Chargaff’s rules are applicable only for double stranded DNA molecule. These are not applicable for single stranded DNA or RNA molecules. Chargaff’s rules state that DNA helices contain equal molar ratios of A and T, G and C. This is because in a dsDNA molecule, complementary base pairing occurs between A and T, and C and G base pairs. This complementary base pairing is not possible in case of single stranded RNA molecule. Thus, Chargaff’s rules are not applicable to RNA.
