Feedback for How are exons and introns related to each other in the gene expression process?

Wording seems wrong –
introns are transcribed into a precursor mRNA (pre-mRNA) and then removed through a process called splicing, while the exons (the coding regions) are joined together to form a mature mRNA. 

Location: 3.7 Genetics Quiz

Wording seems wrong –
introns are transcribed into a precursor mRNA (pre-mRNA) and then removed through a process called splicing, while the exons (the coding regions) are joined together to form a mature mRNA. 

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