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Exons are termed as nucleic acid coding sequences, which are present in mRNA.

Exons are termed as nucleic acid coding sequences, which are present in mRNA. Introns are the non-coding sequences present in the DNA, which are removed by RNA splicing before translation. The intron sequences change frequently with time, whereas, the exon sequences are highly conserved. Read on to explore the major differences between exons and introns.

Following are the important difference between introns and exons:

Introns are intervening sequences between two exons found in eukaryotes. They do not directly code for proteins. They are removed before the mRNA forms proteins. Therefore, these introns undergo the process of splicing. Introns are the non-coding parts of the nucleotides and are not highly conserved. therefore, it is essential to remove introns to prevent the formation of incorrect proteins.

Exons are the coding sequences that code for  amino acid  sequence of the protein. The exons are transcribed into mature mRNA after post-transcriptional modification. These are highly conserved sequences, i.e., they do not change frequently with time. From the listed difference, we can conclude that the main difference between exons and introns is their function in the genome. Also Read:

Found in both prokaryotes and eukaryotes

Introns are the non-coding part of hnRNA, which are removed before translation by RNA splicing to form mRNA

Exons are the nucleotide sequence in mRNA, which codes for proteins

The sequence of the introns changes frequently over time. In other words, they are less conserved

DNA bases that are translated to proteins

Introns are removed in the nucleus before the mRNA moves to the cytoplasm

Mature mRNA contains exons and moves to the cytoplasm from the nucleus