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An interrupted gene is a gene that contains expressed regions of DNA called exons, split with unexpressed regions called introns. Exons provide instructions for coding proteins, which create mRNA necessary for the synthesis of proteins. Introns are removed by recognition of the donor site and the splice acceptor site. The architecture of the interrupted gene allows for the process of alternative splicing, where various mRNA products can be produced from a single gene. The function of introns are still not fully understood and are called noncoding or junk DNA.
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