Final answer:
This statement is true. Introns are intervening sequences that are removed from mRNA during processing, while exons are the retained sequences that code for proteins.
Step-by-step explanation:
True or false: Introns are intervening sequences that are removed from mRNA and exons are the retained sequences.
This statement is true. In eukaryotic genes, exons correspond to protein-coding sequences that are expressed, while introns are intervening sequences that do not encode functional proteins. During mRNA processing, introns are removed from the pre-mRNA molecule through a process called splicing, and the remaining exons are joined together to code for the correct amino acids in the protein.