Monday 21 March 2022

DNA Vs RNA

               Deoxyribonucleic acid and Ribonucleic acid are nucleic acids made up of nucleotides. They both are essential molecules for storing and reading genetic information in an organism.  Let us see the differences between them!

Comparison

DNA

RNA

Full form

Deoxyribonucleic acid

Ribonucleic acid

Structure

Longer chain, double-stranded arranged in double helix made up of deoxyribonucleotides

Shorter chain, single-stranded made up of ribonucleotides

Nucleotide

A nitrogenous base, 2’-deoxyribose sugar and phosphate group

A nitrogenous base, ribose sugar, and phosphate group

Function

Stores all genetic information of an organism

Involved in protein synthesis

Nitrogenous bases 

Adenine (A), Guanine (G), Thymine (T) and Cytosine (C)

Adenine (A), Guanine (G), Uracil (U) and Cytosine (C)

Nitrogenous base pairs

AT and GC

AU and GC

Location

Present in the nucleus, some amount of DNA also seen in mitochondria

Found in the nucleus, cytoplasm, and ribosome

Replication

Self-replicating

Synthesized by transcription when it is needed (DNA to RNA conversion)

Stability

More stable than RNA due to the 2’-deoxyribose. Also, thymine (5’-methyl uracil) makes DNA stable

Less stable than DNA due to the presence of the 2’-hydroxyl group which is more prone to hydrolysis

Reactivity

Less reactive than RNA, does not have any free groups to make DNA more reactive

The free 2’-hydroxyl group make RNA more reactive

 


References :
  • Mackenzie, R. J. (2021, November 25). DNA vs. RNA – 5 Key Differences and Comparison. Genomics Research from Technology Networks. https://www.technologynetworks.com/genomics/lists/what-are-the-key-differences-between-dna-and-rna-296719
  • Latham, K. (2021, January 22). DNA vs. RNA. Biology Dictionary. https://biologydictionary.net/dna-vs-rna/

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