BIOMOLECULES AND ENZYMES

BIOLOGY

NUCLEIC ACIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
For RNA, What is thymine replaced with?
A
Uracil
B
Cytosine
C
Adenine
D
None of the above
Explanation: 

Detailed explanation-1: -DNA (top) includes thymine (red); in RNA (bottom), thymine is replaced with uracil (yellow).

Detailed explanation-2: -Because thymine has a higher resistance to photochemical mutation and makes the genetic code more durable, DNA uses it instead of uracil. This is required to store all the data required for life to function. The chemical breakdown of cytosine results in the easy production of uracil in DNA.

Detailed explanation-3: -In RNA instead of thymine, uracil is present.

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