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Question

What is the role of the exon?


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Solution

Exons definition:

1. An exon is a coding region of a gene that contains the information required to encode a protein.

2. The term Exon is referred to both DNA sequencing that is present within the genome and the respective sequences that are present in the transcripts of RNA.

Role of Exon:

1. Exons are pieces of coding DNA that encode proteins.

2. Different exons code for different types of protein.

3. The domains may be encoded by a single exon or multiple exons spliced together.

4. The presence of exons and introns allows for greater molecular evolution through the process of exon shuffling.

5. Exon shuffling occurs when exons on sister chromosomes are exchanged during recombination.

6. This allows for the formation of new genes.


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