First slide

The Search for Genetic Material

Question

Which of the following statements are incorrect?
I. RNA acts as genetic material as well as catalyst
II. RNA is more stable than DNA
III. RNA has evolved from DNA

Easy

A

I, II
B

Only I
C

I, III
D

II, III

Solution

RNA is less stable than DNA because it is single stranded, has reactive ribose sugar and relatively less stable uracil. Due to modifications in ribose sugar there is formation of deoxyribose, uracil is methylated to form thymine and single stranded nature became double stranded with the formation of complementary strand. Hence DNA has evolved from RNA.

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App