Question

multiple choice question
regions of mrna that code for segments of a protein are called _____, while the segments that do not code for protein (and are spliced out prior to translation) are called _____.
o introns; exons
o exons; introns
o genes; introns
o genes; non - genes

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Explanation:

Exons are the coding - regions of mRNA that are translated into proteins. Introns are non - coding regions that are removed before translation through a process called splicing.

Answer:

B. exons; introns