Question

What is the difference between an intron and an exon?

Answer 1

The DNA is transcribed into messenger RNA which is further translated into protein. The transcribed mRNA is known as heterogeneous RNA in its initial stages. It is changed into mature mRNA through the sequential process. The heterogenous has certain coding and noncoding regions on it.

The coding regions are known as exons while the noncoding regions are known as introns. The introns have the nonsense codon which cannot be translated so these are primmed off by a process known as splicing. The exons are joined together by ligase after removal of extrons which turns it into a continuous strand of DNA.