Answer: -remaining pieces that are spliced together to make the final mRNA
What are exons?

In molecular biology splicing is the editing of the nascent pre-messenger RNA (pre-mRNA) transcript in which introns are removed and exons are joined together (ligated). For nuclear-encoded genes splicing takes place within the nucleus either co-transcriptionally or immediately after transcription.

Alternative splicing - Wikipedia

Exon - Wikipedia

Exon shuffling - Wikipedia

Exon - Wikipedia

Exon trapping or 'gene trapping' is a molecular biology technique that exploits the existence of the intron-exon splicing to find new genes. The first exon of a 'trapped' gene splices into the exon that is contained in the insertional DNA. This new exon contains the ORF for a reporter gene that can now be expressed using the enhancers that control the target gene. A scientist knows that a new gene has been trapped when the reporter gene is expressed.

Exome sequencing also known as whole exome sequencing is a genomic technique for sequencing all of the protein-coding regions of genes in a genome. It consists of two steps: the first step is to select only the subset of DNA that encodes proteins. These regions are known as exons – humans have about 180 000 exons constituting about 1% of the human genome or approximately 30 million base …

The exome is composed of all of the exons within the genome the sequences which when transcribed remain within the mature RNA after introns are removed by RNA splicing. This includes untranslated regions of mRNA and coding sequence (or CDS). Exome sequencing has proven to be an efficient method to determine the ...

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