Difference Between Exons and Introns

The sequence of the nucleic acid represented in the RNA molecule is known as an exon. introns The nucleotide sequences seen within the genes and that which are removed through RNA splicing for generating a mature RNA molecule is known as an intron. In simple words, the DNA bases that are translated into mRNA are known as exons while introns are also DNA bases that are found in-between exons. The main difference between exons and introns is that the former move to the cytoplasm from the nucleus when a mature mRNA is produced while the latter continues to remain in the nucleus even after the RNA splicing. Here, in the article let us look at the various differences between exons and introns.

Introns vs Exons

Introns Exons
Found in Eukaryotes only Found in both prokaryotes and eukaryotes
Non-coding areas of the DNA Coding areas of the DNA
Introns are the transcribed part of the nucleotide sequence in an mRNA and are known to carry the non-coding part for the proteins Exons are the transcribed part of the nucleotide sequence in mRNA that is responsible for the protein synthesis.
The sequence of the introns changes frequently over time. In other words, they are less conserved Exons are highly conserved
DNA bases found in between exons DNA bases that are translated to mRNA
Even after the mRNA splicing, introns continue to remain in the nucleus When mature mRNA is produced, exons move to the cytoplasm from the nucleus

From the listed difference, we can conclude that the main difference between exons and introns is their function in the genome.

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