Exons are defined as which of the following?

Exons are defined as which of the following?

• A. Sequences That Are Removed During RNA Processing
• B. Regions That Encode Proteins Only
• C. Information That Is Needed to Produce a Functional Product (Part of the Gene Within the DNA Sequence that Is Expressed)
• D. Noncoding Regions

Answer: (C)

Exons are the parts of a gene that are retained and used to make the final, functional product. During RNA processing, the initial transcript is spliced to remove the intervening sequences (introns), and the remaining pieces (exons) are joined together to form the mature mRNA. This mature transcript carries the information that will be used to synthesize a functional product, typically a protein, though some genes produce functional noncoding RNAs from exons. So exons are the expressed portions of the gene that contribute to the final, functional molecule.

Exons are the parts of a gene that are retained and used to make the final, functional product. During RNA processing, the initial transcript is spliced to remove the intervening sequences (introns), and the remaining pieces (exons) are joined together to form the mature mRNA. This mature transcript carries the information that will be used to synthesize a functional product, typically a protein, though some genes produce functional noncoding RNAs from exons. So exons are the expressed portions of the gene that contribute to the final, functional molecule.